68701690 has 32 divisors (see below), whose sum is σ = 129620736. Its totient is φ = 26167680.

The previous prime is 68701669. The next prime is 68701693. The reversal of 68701690 is 9610786.

It is a super-2 number, since 2×68701690² = 9439844417712200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (68701693) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 64099 + ... + 65161.

It is an arithmetic number, because the mean of its divisors is an integer number (4050648).

Almost surely, 2^68701690 is an apocalyptic number.

68701690 is a deficient number, since it is larger than the sum of its proper divisors (60919046).

68701690 is a wasteful number, since it uses less digits than its factorization.

68701690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1374.

The product of its (nonzero) digits is 18144, while the sum is 37.

The square root of 68701690 is about 8288.6482613271. The cubic root of 68701690 is about 409.5646578812.

The spelling of 68701690 in words is "sixty-eight million, seven hundred one thousand, six hundred ninety".