64313771 has 12 divisors (see below), whose sum is σ = 68853960. Its totient is φ = 60057600.

The previous prime is 64313749. The next prime is 64313797. The reversal of 64313771 is 17731346.

It is not a de Polignac number, because 64313771 - 2¹⁸ = 64051627 is a prime.

It is a super-2 number, since 2×64313771² = 8272522280480882, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64313701) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 39371 + ... + 40971.

It is an arithmetic number, because the mean of its divisors is an integer number (5737830).

Almost surely, 2^64313771 is an apocalyptic number.

64313771 is a deficient number, since it is larger than the sum of its proper divisors (4540189).

64313771 is a wasteful number, since it uses less digits than its factorization.

64313771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1774 (or 1757 counting only the distinct ones).

The product of its digits is 10584, while the sum is 32.

The square root of 64313771 is about 8019.5867100493. The cubic root of 64313771 is about 400.6526242083.

The spelling of 64313771 in words is "sixty-four million, three hundred thirteen thousand, seven hundred seventy-one".