64761478 has 16 divisors (see below), whose sum is σ = 98406000. Its totient is φ = 31961952.

The previous prime is 64761461. The next prime is 64761479. The reversal of 64761478 is 87416746.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64761479) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 90988 + ... + 91696.

It is an arithmetic number, because the mean of its divisors is an integer number (6150375).

Almost surely, 2^64761478 is an apocalyptic number.

64761478 is a deficient number, since it is larger than the sum of its proper divisors (33644522).

64761478 is a wasteful number, since it uses less digits than its factorization.

64761478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1239.

The product of its digits is 225792, while the sum is 43.

The square root of 64761478 is about 8047.4516463288. The cubic root of 64761478 is about 401.5801620003.

The spelling of 64761478 in words is "sixty-four million, seven hundred sixty-one thousand, four hundred seventy-eight".