66460625 has 40 divisors (see below), whose sum is σ = 103616832. Its totient is φ = 41400000.

The previous prime is 66460619. The next prime is 66460643. The reversal of 66460625 is 52606466.

It is not a de Polignac number, because 66460625 - 2⁶ = 66460561 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a Curzon number.

It is a zygodrome in base 3.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 47435 + ... + 48815.

Almost surely, 2^66460625 is an apocalyptic number.

It is an amenable number.

66460625 is a deficient number, since it is larger than the sum of its proper divisors (37156207).

66460625 is a wasteful number, since it uses less digits than its factorization.

66460625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1419 (or 1404 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 35.

The square root of 66460625 is about 8152.3386215245. The cubic root of 66460625 is about 405.0619729378.

The spelling of 66460625 in words is "sixty-six million, four hundred sixty thousand, six hundred twenty-five".