68490375 has 16 divisors (see below), whose sum is σ = 113968608. Its totient is φ = 36528000.

The previous prime is 68490371. The next prime is 68490397. The reversal of 68490375 is 57309486.

It is a happy number.

It is not a de Polignac number, because 68490375 - 2² = 68490371 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68490371) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 90946 + ... + 91695.

It is an arithmetic number, because the mean of its divisors is an integer number (7123038).

Almost surely, 2^68490375 is an apocalyptic number.

68490375 is a deficient number, since it is larger than the sum of its proper divisors (45478233).

68490375 is a wasteful number, since it uses less digits than its factorization.

68490375 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182659 (or 182649 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 42.

The square root of 68490375 is about 8275.8911906815. The cubic root of 68490375 is about 409.1443089664.

The spelling of 68490375 in words is "sixty-eight million, four hundred ninety thousand, three hundred seventy-five".