66670708 has 48 divisors (see below), whose sum is σ = 132088320. Its totient is φ = 29232000.

The previous prime is 66670699. The next prime is 66670717. The reversal of 66670708 is 80707666.

It is an interprime number because it is at equal distance from previous prime (66670699) and next prime (66670717).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 94758 + ... + 95458.

It is an arithmetic number, because the mean of its divisors is an integer number (2751840).

Almost surely, 2^66670708 is an apocalyptic number.

It is an amenable number.

66670708 is a deficient number, since it is larger than the sum of its proper divisors (65417612).

66670708 is a wasteful number, since it uses less digits than its factorization.

66670708 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 808 (or 806 counting only the distinct ones).

The product of its (nonzero) digits is 84672, while the sum is 40.

The square root of 66670708 is about 8165.2132856405. The cubic root of 66670708 is about 405.4883262746.

The spelling of 66670708 in words is "sixty-six million, six hundred seventy thousand, seven hundred eight".