66625703 has 8 divisors (see below), whose sum is σ = 71062272. Its totient is φ = 62246656.

The previous prime is 66625693. The next prime is 66625709. The reversal of 66625703 is 30752666.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 66625703 - 2⁶ = 66625639 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66625709) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11975 + ... + 16632.

It is an arithmetic number, because the mean of its divisors is an integer number (8882784).

Almost surely, 2^66625703 is an apocalyptic number.

66625703 is a deficient number, since it is larger than the sum of its proper divisors (4436569).

66625703 is a wasteful number, since it uses less digits than its factorization.

66625703 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28761.

The product of its (nonzero) digits is 45360, while the sum is 35.

The square root of 66625703 is about 8162.4569217853. The cubic root of 66625703 is about 405.3970662573.

The spelling of 66625703 in words is "sixty-six million, six hundred twenty-five thousand, seven hundred three".