64764530 has 16 divisors (see below), whose sum is σ = 117647640. Its totient is φ = 25667712.

The previous prime is 64764529. The next prime is 64764563. The reversal of 64764530 is 3546746.

It can be written as a sum of positive squares in 4 ways, for example, as 61606801 + 3157729 = 7849^2 + 1777^2 .

It is a super-2 number, since 2×64764530² = 8388888692241800, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28619 + ... + 30798.

Almost surely, 2^64764530 is an apocalyptic number.

64764530 is a deficient number, since it is larger than the sum of its proper divisors (52883110).

64764530 is a wasteful number, since it uses less digits than its factorization.

64764530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59533.

The product of its (nonzero) digits is 60480, while the sum is 35.

The square root of 64764530 is about 8047.6412693410. The cubic root of 64764530 is about 401.5864702947.

The spelling of 64764530 in words is "sixty-four million, seven hundred sixty-four thousand, five hundred thirty".