64067634 has 12 divisors (see below), whose sum is σ = 138813246. Its totient is φ = 21355872.

The previous prime is 64067621. The next prime is 64067659. The reversal of 64067634 is 43676046.

64067634 is a `hidden beast` number, since 640 + 6 + 7 + 6 + 3 + 4 = 666.

It can be written as a sum of positive squares in only one way, i.e., 58293225 + 5774409 = 7635^2 + 2403^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1779639 + ... + 1779674.

Almost surely, 2^64067634 is an apocalyptic number.

64067634 is an abundant number, since it is smaller than the sum of its proper divisors (74745612).

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

64067634 is a wasteful number, since it uses less digits than its factorization.

64067634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3559321 (or 3559318 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 36.

The square root of 64067634 is about 8004.2260088031. The cubic root of 64067634 is about 400.1408545608.

The spelling of 64067634 in words is "sixty-four million, sixty-seven thousand, six hundred thirty-four".