68425690 has 16 divisors (see below), whose sum is σ = 128521728. Its totient is φ = 26180176.

The previous prime is 68425661. The next prime is 68425699. The reversal of 68425690 is 9652486.

It is a happy number.

It is a super-2 number, since 2×68425690² = 9364150103952200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (68425699) 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, 148522 + ... + 148981.

It is an arithmetic number, because the mean of its divisors is an integer number (8032608).

Almost surely, 2^68425690 is an apocalyptic number.

68425690 is a deficient number, since it is larger than the sum of its proper divisors (60096038).

68425690 is a wasteful number, since it uses less digits than its factorization.

68425690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 297533.

The product of its (nonzero) digits is 103680, while the sum is 40.

The square root of 68425690 is about 8271.9822291879. The cubic root of 68425690 is about 409.0154644113.

The spelling of 68425690 in words is "sixty-eight million, four hundred twenty-five thousand, six hundred ninety".