652685994 has 48 divisors (see below), whose sum is σ = 1474151328. Its totient is φ = 208508256.

The previous prime is 652685993. The next prime is 652686077. The reversal of 652685994 is 499586256.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 652685994.

It is not an unprimeable number, because it can be changed into a prime (652685993) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 37309 + ... + 51935.

It is an arithmetic number, because the mean of its divisors is an integer number (30711486).

Almost surely, 2^652685994 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 652685994, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (737075664).

652685994 is an abundant number, since it is smaller than the sum of its proper divisors (821465334).

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

652685994 is a wasteful number, since it uses less digits than its factorization.

652685994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14739 (or 14736 counting only the distinct ones).

The product of its digits is 4665600, while the sum is 54.

The square root of 652685994 is about 25547.7199374034. The cubic root of 652685994 is about 867.4306517439.

The spelling of 652685994 in words is "six hundred fifty-two million, six hundred eighty-five thousand, nine hundred ninety-four".