66115004 has 24 divisors (see below), whose sum is σ = 120031968. Its totient is φ = 31838400.

The previous prime is 66114977. The next prime is 66115013. The reversal of 66115004 is 40051166.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12737 + ... + 17159.

It is an arithmetic number, because the mean of its divisors is an integer number (5001332).

Almost surely, 2^66115004 is an apocalyptic number.

It is an amenable number.

66115004 is a deficient number, since it is larger than the sum of its proper divisors (53916964).

66115004 is a wasteful number, since it uses less digits than its factorization.

66115004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4565 (or 4563 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 66115004 is about 8131.1133309037. The cubic root of 66115004 is about 404.3585925083.

The spelling of 66115004 in words is "sixty-six million, one hundred fifteen thousand, four".