64994763 has 16 divisors (see below), whose sum is σ = 91537280. Its totient is φ = 40906944.

The previous prime is 64994759. The next prime is 64994773. The reversal of 64994763 is 36749946.

It is not a de Polignac number, because 64994763 - 2² = 64994759 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64994773) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16020 + ... + 19662.

It is an arithmetic number, because the mean of its divisors is an integer number (5721080).

Almost surely, 2^64994763 is an apocalyptic number.

64994763 is a deficient number, since it is larger than the sum of its proper divisors (26542517).

64994763 is a wasteful number, since it uses less digits than its factorization.

64994763 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3978.

The product of its digits is 979776, while the sum is 48.

The square root of 64994763 is about 8061.9329568038. The cubic root of 64994763 is about 402.0617773428.

The spelling of 64994763 in words is "sixty-four million, nine hundred ninety-four thousand, seven hundred sixty-three".