654634812 has 48 divisors (see below), whose sum is σ = 1698056192. Its totient is φ = 194927040.

The previous prime is 654634801. The next prime is 654634819. The reversal of 654634812 is 218436456.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (654634819) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 62848 + ... + 72519.

Almost surely, 2^654634812 is an apocalyptic number.

654634812 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

It is an amenable number.

654634812 is an abundant number, since it is smaller than the sum of its proper divisors (1043421380).

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

654634812 is a wasteful number, since it uses less digits than its factorization.

654634812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135418 (or 135416 counting only the distinct ones).

The product of its digits is 138240, while the sum is 39.

The square root of 654634812 is about 25585.8322514629. The cubic root of 654634812 is about 868.2931311912.

The spelling of 654634812 in words is "six hundred fifty-four million, six hundred thirty-four thousand, eight hundred twelve".