66926625 has 32 divisors (see below), whose sum is σ = 111915648. Its totient is φ = 35518400.

The previous prime is 66926617. The next prime is 66926641. The reversal of 66926625 is 52662966.

It is not a de Polignac number, because 66926625 - 2³ = 66926617 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 118594 + ... + 119156.

It is an arithmetic number, because the mean of its divisors is an integer number (3497364).

Almost surely, 2^66926625 is an apocalyptic number.

It is an amenable number.

66926625 is a deficient number, since it is larger than the sum of its proper divisors (44989023).

66926625 is a wasteful number, since it uses less digits than its factorization.

66926625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 898 (or 888 counting only the distinct ones).

The product of its digits is 233280, while the sum is 42.

The square root of 66926625 is about 8180.8694525704. The cubic root of 66926625 is about 406.0064891745.

The spelling of 66926625 in words is "sixty-six million, nine hundred twenty-six thousand, six hundred twenty-five".