64764550 has 48 divisors (see below), whose sum is σ = 126777600. Its totient is φ = 24567840.

The previous prime is 64764529. The next prime is 64764563. The reversal of 64764550 is 5546746.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 228709 + ... + 228991.

It is an arithmetic number, because the mean of its divisors is an integer number (2641200).

Almost surely, 2^64764550 is an apocalyptic number.

64764550 is a deficient number, since it is larger than the sum of its proper divisors (62013050).

64764550 is a wasteful number, since it uses less digits than its factorization.

64764550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 517 (or 512 counting only the distinct ones).

The product of its (nonzero) digits is 100800, while the sum is 37.

The square root of 64764550 is about 8047.6425119410. The cubic root of 64764550 is about 401.5865116328.

It can be divided in two parts, 6476 and 4550, that added together give a triangular number (11026 = T₁₄₈).

The spelling of 64764550 in words is "sixty-four million, seven hundred sixty-four thousand, five hundred fifty".