66612070 has 48 divisors (see below), whose sum is σ = 141629040. Its totient is φ = 22486464.

The previous prime is 66612041. The next prime is 66612083. The reversal of 66612070 is 7021666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 31816 + ... + 33844.

It is an arithmetic number, because the mean of its divisors is an integer number (2950605).

Almost surely, 2^66612070 is an apocalyptic number.

66612070 is an abundant number, since it is smaller than the sum of its proper divisors (75016970).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66612070 is a wasteful number, since it uses less digits than its factorization.

66612070 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2117 (or 2110 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 66612070 is about 8161.6217751131. The cubic root of 66612070 is about 405.3694134898.

The spelling of 66612070 in words is "sixty-six million, six hundred twelve thousand, seventy".