64860744 has 64 divisors (see below), whose sum is σ = 175392000. Its totient is φ = 19869696.

The previous prime is 64860739. The next prime is 64860749. The reversal of 64860744 is 44706846.

It is an interprime number because it is at equal distance from previous prime (64860739) and next prime (64860749).

It is a super-2 number, since 2×64860744² = 8413832224467072, which contains 22 as substring.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (64860749) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 139857 + ... + 140319.

It is an arithmetic number, because the mean of its divisors is an integer number (2740500).

Almost surely, 2^64860744 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64860744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (87696000).

64860744 is an abundant number, since it is smaller than the sum of its proper divisors (110531256).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

64860744 is a wasteful number, since it uses less digits than its factorization.

64860744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 934 (or 930 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 39.

The square root of 64860744 is about 8053.6168272398. The cubic root of 64860744 is about 401.7852371341.

The spelling of 64860744 in words is "sixty-four million, eight hundred sixty thousand, seven hundred forty-four".