66952475 has 12 divisors (see below), whose sum is σ = 83956680. Its totient is φ = 52958400.

The previous prime is 66952463. The next prime is 66952481. The reversal of 66952475 is 57425966.

It is not a de Polignac number, because 66952475 - 2¹⁴ = 66936091 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12821 + ... + 17270.

It is an arithmetic number, because the mean of its divisors is an integer number (6996390).

Almost surely, 2^66952475 is an apocalyptic number.

66952475 is a deficient number, since it is larger than the sum of its proper divisors (17004205).

66952475 is a wasteful number, since it uses less digits than its factorization.

66952475 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30190 (or 30185 counting only the distinct ones).

The product of its digits is 453600, while the sum is 44.

The square root of 66952475 is about 8182.4492054641. The cubic root of 66952475 is about 406.0587549546.

The spelling of 66952475 in words is "sixty-six million, nine hundred fifty-two thousand, four hundred seventy-five".