64490762 has 12 divisors (see below), whose sum is σ = 112529970. Its totient is φ = 27638856.

The previous prime is 64490761. The next prime is 64490773. The reversal of 64490762 is 26709446.

It can be written as a sum of positive squares in only one way, i.e., 64464841 + 25921 = 8029^2 + 161^2 .

It is not an unprimeable number, because it can be changed into a prime (64490761) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 328937 + ... + 329132.

Almost surely, 2^64490762 is an apocalyptic number.

64490762 is a deficient number, since it is larger than the sum of its proper divisors (48039208).

64490762 is a wasteful number, since it uses less digits than its factorization.

64490762 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 658085 (or 658078 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 38.

The square root of 64490762 is about 8030.6140487512. The cubic root of 64490762 is about 401.0198185490.

The spelling of 64490762 in words is "sixty-four million, four hundred ninety thousand, seven hundred sixty-two".