64707533 has 12 divisors (see below), whose sum is σ = 74220384. Its totient is φ = 56265000.

The previous prime is 64707527. The next prime is 64707583. The reversal of 64707533 is 33570746.

It is a happy number.

It is not a de Polignac number, because 64707533 - 2⁶ = 64707469 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 64707493 and 64707502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64707583) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8843 + ... + 14408.

It is an arithmetic number, because the mean of its divisors is an integer number (6185032).

Almost surely, 2^64707533 is an apocalyptic number.

It is an amenable number.

64707533 is a deficient number, since it is larger than the sum of its proper divisors (9512851).

64707533 is a wasteful number, since it uses less digits than its factorization.

64707533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23296 (or 23285 counting only the distinct ones).

The product of its (nonzero) digits is 52920, while the sum is 35.

The square root of 64707533 is about 8044.0992659216. The cubic root of 64707533 is about 401.4686283113.

The spelling of 64707533 in words is "sixty-four million, seven hundred seven thousand, five hundred thirty-three".