64140974 has 32 divisors (see below), whose sum is σ = 104509440. Its totient is φ = 29444800.

The previous prime is 64140931. The next prime is 64141003. The reversal of 64140974 is 47904146.

It is a super-2 number, since 2×64140974² = 8228129091337352, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 133667 + ... + 134145.

It is an arithmetic number, because the mean of its divisors is an integer number (3265920).

Almost surely, 2^64140974 is an apocalyptic number.

64140974 is a deficient number, since it is larger than the sum of its proper divisors (40368466).

64140974 is a wasteful number, since it uses less digits than its factorization.

64140974 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 616.

The product of its (nonzero) digits is 24192, while the sum is 35.

The square root of 64140974 is about 8008.8060283665. The cubic root of 64140974 is about 400.2934804537.

The spelling of 64140974 in words is "sixty-four million, one hundred forty thousand, nine hundred seventy-four".