64140716 has 12 divisors (see below), whose sum is σ = 113054760. Its totient is φ = 31839360.

The previous prime is 64140701. The next prime is 64140731. The reversal of 64140716 is 61704146.

It is an interprime number because it is at equal distance from previous prime (64140701) and next prime (64140731).

It is a super-2 number, since 2×64140716² = 8228062897985312, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 57125 + ... + 58236.

It is an arithmetic number, because the mean of its divisors is an integer number (9421230).

Almost surely, 2^64140716 is an apocalyptic number.

It is an amenable number.

64140716 is a deficient number, since it is larger than the sum of its proper divisors (48914044).

64140716 is a wasteful number, since it uses less digits than its factorization.

64140716 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115504 (or 115502 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 64140716 is about 8008.7899210805. The cubic root of 64140716 is about 400.2929437409.

The spelling of 64140716 in words is "sixty-four million, one hundred forty thousand, seven hundred sixteen".