68904952 has 32 divisors (see below), whose sum is σ = 133776720. Its totient is φ = 33246720.

The previous prime is 68904949. The next prime is 68904959. The reversal of 68904952 is 25940986.

It is a Smith number, since the sum of its digits (43) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 68904899 and 68904908.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68904959) 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, 37888 + ... + 39664.

Almost surely, 2^68904952 is an apocalyptic number.

It is an amenable number.

68904952 is a deficient number, since it is larger than the sum of its proper divisors (64871768).

68904952 is a wasteful number, since it uses less digits than its factorization.

68904952 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1951 (or 1947 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 43.

The square root of 68904952 is about 8300.9006740233. The cubic root of 68904952 is about 409.9681752018.

The spelling of 68904952 in words is "sixty-eight million, nine hundred four thousand, nine hundred fifty-two".