64479737 has 12 divisors (see below), whose sum is σ = 75554640. Its totient is φ = 54864936.

The previous prime is 64479719. The next prime is 64479763. The reversal of 64479737 is 73797446.

It is not a de Polignac number, because 64479737 - 2²⁰ = 63431161 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 64479691 and 64479700.

It is not an unprimeable number, because it can be changed into a prime (64479707) 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, 2078 + ... + 11544.

It is an arithmetic number, because the mean of its divisors is an integer number (6296220).

Almost surely, 2^64479737 is an apocalyptic number.

It is an amenable number.

64479737 is a deficient number, since it is larger than the sum of its proper divisors (11074903).

64479737 is a wasteful number, since it uses less digits than its factorization.

64479737 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9620 (or 9613 counting only the distinct ones).

The product of its digits is 889056, while the sum is 47.

The square root of 64479737 is about 8029.9275837332. The cubic root of 64479737 is about 400.9969651700.

The spelling of 64479737 in words is "sixty-four million, four hundred seventy-nine thousand, seven hundred thirty-seven".