1646877696 has 88 divisors (see below), whose sum is σ = 4508476560. Its totient is φ = 534085632.

The previous prime is 1646877691. The next prime is 1646877721. The reversal of 1646877696 is 6967786461.

It is a happy number.

It is a super-2 number, since 2×1646877696² = 5424412291164536832, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1646877691) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 106420 + ... + 120908.

Almost surely, 2^1646877696 is an apocalyptic number.

1646877696 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1646877696, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2254238280).

1646877696 is an abundant number, since it is smaller than the sum of its proper divisors (2861598864).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1646877696 is a wasteful number, since it uses less digits than its factorization.

1646877696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14549 (or 14531 counting only the distinct ones).

The product of its digits is 18289152, while the sum is 60.

The square root of 1646877696 is about 40581.7409187925. The cubic root of 1646877696 is about 1180.9199223096.

The spelling of 1646877696 in words is "one billion, six hundred forty-six million, eight hundred seventy-seven thousand, six hundred ninety-six".