66098972 has 12 divisors (see below), whose sum is σ = 116320680. Its totient is φ = 32864496.

The previous prime is 66098971. The next prime is 66099013. The reversal of 66098972 is 27989066.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66098971) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45443 + ... + 46874.

It is an arithmetic number, because the mean of its divisors is an integer number (9693390).

Almost surely, 2^66098972 is an apocalyptic number.

It is an amenable number.

66098972 is a deficient number, since it is larger than the sum of its proper divisors (50221708).

66098972 is a wasteful number, since it uses less digits than its factorization.

66098972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92500 (or 92498 counting only the distinct ones).

The product of its (nonzero) digits is 326592, while the sum is 47.

The square root of 66098972 is about 8130.1274282756. The cubic root of 66098972 is about 404.3259060246.

The spelling of 66098972 in words is "sixty-six million, ninety-eight thousand, nine hundred seventy-two".