64763387 has 16 divisors (see below), whose sum is σ = 74444832. Its totient is φ = 55810560.

The previous prime is 64763359. The next prime is 64763393. The reversal of 64763387 is 78336746.

It is not a de Polignac number, because 64763387 - 2⁸ = 64763131 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64763087) 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, 27833 + ... + 30069.

It is an arithmetic number, because the mean of its divisors is an integer number (4652802).

Almost surely, 2^64763387 is an apocalyptic number.

64763387 is a deficient number, since it is larger than the sum of its proper divisors (9681445).

64763387 is a wasteful number, since it uses less digits than its factorization.

64763387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2398.

The product of its digits is 508032, while the sum is 44.

The square root of 64763387 is about 8047.5702544308. The cubic root of 64763387 is about 401.5841078079.

The spelling of 64763387 in words is "sixty-four million, seven hundred sixty-three thousand, three hundred eighty-seven".