64457316 has 192 divisors, whose sum is σ = 218050560. Its totient is φ = 15966720.

The previous prime is 64457299. The next prime is 64457333. The reversal of 64457316 is 61375446.

It is a happy number.

64457316 is a `hidden beast` number, since 644 + 5 + 7 + 3 + 1 + 6 = 666.

It is an interprime number because it is at equal distance from previous prime (64457299) and next prime (64457333).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 191100 + ... + 191436.

It is an arithmetic number, because the mean of its divisors is an integer number (1135680).

Almost surely, 2^64457316 is an apocalyptic number.

64457316 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64457316, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (109025280).

64457316 is an abundant number, since it is smaller than the sum of its proper divisors (153593244).

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

64457316 is a wasteful number, since it uses less digits than its factorization.

64457316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 391 (or 383 counting only the distinct ones).

The product of its digits is 60480, while the sum is 36.

The square root of 64457316 is about 8028.5313725488. The cubic root of 64457316 is about 400.9504813408.

The spelling of 64457316 in words is "sixty-four million, four hundred fifty-seven thousand, three hundred sixteen".