653678670 has 16 divisors (see below), whose sum is σ = 1568828880. Its totient is φ = 174314304.

The previous prime is 653678659. The next prime is 653678677. The reversal of 653678670 is 76876356.

It is a super-2 number, since 2×653678670² = 854591607225937800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (653678677) 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, 10894615 + ... + 10894674.

It is an arithmetic number, because the mean of its divisors is an integer number (98051805).

Almost surely, 2^653678670 is an apocalyptic number.

653678670 is an abundant number, since it is smaller than the sum of its proper divisors (915150210).

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

653678670 is a wasteful number, since it uses less digits than its factorization.

653678670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21789299.

The product of its (nonzero) digits is 1270080, while the sum is 48.

The square root of 653678670 is about 25567.1404345500. The cubic root of 653678670 is about 867.8701900139.

The spelling of 653678670 in words is "six hundred fifty-three million, six hundred seventy-eight thousand, six hundred seventy".