68919772 has 18 divisors (see below), whose sum is σ = 122079048. Its totient is φ = 34041888.

The previous prime is 68919757. The next prime is 68919787. The reversal of 68919772 is 27791986.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (68919757) and next prime (68919787).

It is a congruent number.

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 5 ways as a sum of consecutive naturals, for example, 168304 + ... + 168712.

Almost surely, 2^68919772 is an apocalyptic number.

It is an amenable number.

68919772 is a deficient number, since it is larger than the sum of its proper divisors (53159276).

68919772 is a wasteful number, since it uses less digits than its factorization.

68919772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 925 (or 514 counting only the distinct ones).

The product of its digits is 381024, while the sum is 49.

The square root of 68919772 is about 8301.7933002454. The cubic root of 68919772 is about 409.9975649270.

The spelling of 68919772 in words is "sixty-eight million, nine hundred nineteen thousand, seven hundred seventy-two".