64196646 has 12 divisors (see below), whose sum is σ = 128432556. Its totient is φ = 21392340.

The previous prime is 64196623. The next prime is 64196647. The reversal of 64196646 is 64669146.

It is a junction number, because it is equal to n+sod(n) for n = 64196598 and 64196607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64196647) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 17991 + ... + 21261.

It is an arithmetic number, because the mean of its divisors is an integer number (10702713).

Almost surely, 2^64196646 is an apocalyptic number.

64196646 is an abundant number, since it is smaller than the sum of its proper divisors (64235910).

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

64196646 is an frugal number, since it uses more digits than its factorization.

64196646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6547 (or 3276 counting only the distinct ones).

The product of its digits is 186624, while the sum is 42.

The square root of 64196646 is about 8012.2809486438. The cubic root of 64196646 is about 400.4092602889.

The spelling of 64196646 in words is "sixty-four million, one hundred ninety-six thousand, six hundred forty-six".