653667612 has 96 divisors (see below), whose sum is σ = 1795497984. Its totient is φ = 183168000.

The previous prime is 653667589. The next prime is 653667617. The reversal of 653667612 is 216766356.

It is a super-3 number, since 3×653667612³ (a number of 27 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (653667617) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 78237 + ... + 86187.

It is an arithmetic number, because the mean of its divisors is an integer number (18703104).

Almost surely, 2^653667612 is an apocalyptic number.

653667612 is a gapful number since it is divisible by the number (62) 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 653667612, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (897748992).

653667612 is an abundant number, since it is smaller than the sum of its proper divisors (1141830372).

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

653667612 is a wasteful number, since it uses less digits than its factorization.

653667612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8019 (or 8017 counting only the distinct ones).

The product of its digits is 272160, while the sum is 42.

The square root of 653667612 is about 25566.9241794941. The cubic root of 653667612 is about 867.8652961911.

The spelling of 653667612 in words is "six hundred fifty-three million, six hundred sixty-seven thousand, six hundred twelve".