64474761 has 32 divisors (see below), whose sum is σ = 101219328. Its totient is φ = 36126720.

The previous prime is 64474723. The next prime is 64474763. The reversal of 64474761 is 16747446.

It is a happy number.

It is not a de Polignac number, because 64474761 - 2¹⁰ = 64473737 is a prime.

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 (64474763) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18985 + ... + 22121.

It is an arithmetic number, because the mean of its divisors is an integer number (3163104).

Almost surely, 2^64474761 is an apocalyptic number.

It is an amenable number.

64474761 is a deficient number, since it is larger than the sum of its proper divisors (36744567).

64474761 is a wasteful number, since it uses less digits than its factorization.

64474761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3201.

The product of its digits is 112896, while the sum is 39.

The square root of 64474761 is about 8029.6177368540. The cubic root of 64474761 is about 400.9866497215.

It can be divided in two parts, 64 and 474761, that added together give a triangular number (474825 = T₉₇₄).

The spelling of 64474761 in words is "sixty-four million, four hundred seventy-four thousand, seven hundred sixty-one".