653432680 has 32 divisors (see below), whose sum is σ = 1471105800. Its totient is φ = 261216256.

The previous prime is 653432677. The next prime is 653432683. The reversal of 653432680 is 86234356.

It is an interprime number because it is at equal distance from previous prime (653432677) and next prime (653432683).

It can be written as a sum of positive squares in 4 ways, for example, as 489028996 + 164403684 = 22114^2 + 12822^2 .

It is not an unprimeable number, because it can be changed into a prime (653432683) 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, 81324 + ... + 88996.

Almost surely, 2^653432680 is an apocalyptic number.

It is an amenable number.

653432680 is an abundant number, since it is smaller than the sum of its proper divisors (817673120).

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

653432680 is a wasteful number, since it uses less digits than its factorization.

653432680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9813 (or 9809 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 37.

The square root of 653432680 is about 25562.3293148336. The cubic root of 653432680 is about 867.7613117617.

The spelling of 653432680 in words is "six hundred fifty-three million, four hundred thirty-two thousand, six hundred eighty".