64763634 has 32 divisors (see below), whose sum is σ = 139829760. Its totient is φ = 19878912.

The previous prime is 64763623. The next prime is 64763669. The reversal of 64763634 is 43636746.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a junction number, because it is equal to n+sod(n) for n = 64763592 and 64763601.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44287 + ... + 45725.

It is an arithmetic number, because the mean of its divisors is an integer number (4369680).

Almost surely, 2^64763634 is an apocalyptic number.

64763634 is an abundant number, since it is smaller than the sum of its proper divisors (75066126).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

64763634 is a wasteful number, since it uses less digits than its factorization.

64763634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2034.

The product of its digits is 217728, while the sum is 39.

The square root of 64763634 is about 8047.5856006631. The cubic root of 64763634 is about 401.5846183389.

The spelling of 64763634 in words is "sixty-four million, seven hundred sixty-three thousand, six hundred thirty-four".