66001504 has 12 divisors (see below), whose sum is σ = 129940524. Its totient is φ = 33000736.

The previous prime is 66001447. The next prime is 66001541. The reversal of 66001504 is 40510066.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1031242 + ... + 1031305.

It is an arithmetic number, because the mean of its divisors is an integer number (10828377).

Almost surely, 2^66001504 is an apocalyptic number.

It is an amenable number.

66001504 is a deficient number, since it is larger than the sum of its proper divisors (63939020).

66001504 is a wasteful number, since it uses less digits than its factorization.

66001504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2062557 (or 2062549 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 66001504 is about 8124.1309689098. The cubic root of 66001504 is about 404.1270717485.

The spelling of 66001504 in words is "sixty-six million, one thousand, five hundred four".