68931954 has 48 divisors (see below), whose sum is σ = 183822912. Its totient is φ = 18179424.

The previous prime is 68931931. The next prime is 68931971. The reversal of 68931954 is 45913986.

It is a happy number.

It is a super-2 number, since 2×68931954² = 9503228564516232, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19404 + ... + 22679.

It is an arithmetic number, because the mean of its divisors is an integer number (3829644).

Almost surely, 2^68931954 is an apocalyptic number.

68931954 is an abundant number, since it is smaller than the sum of its proper divisors (114890958).

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

68931954 is a wasteful number, since it uses less digits than its factorization.

68931954 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42111 (or 42108 counting only the distinct ones).

The product of its digits is 233280, while the sum is 45.

The square root of 68931954 is about 8302.5269647259. The cubic root of 68931954 is about 410.0217200470.

The spelling of 68931954 in words is "sixty-eight million, nine hundred thirty-one thousand, nine hundred fifty-four".