665714070 has 96 divisors (see below), whose sum is σ = 2064172032. Its totient is φ = 145544256.

The previous prime is 665714041. The next prime is 665714107. The reversal of 665714070 is 70417566.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 8482 + ... + 37461.

It is an arithmetic number, because the mean of its divisors is an integer number (21501792).

Almost surely, 2^665714070 is an apocalyptic number.

665714070 is an abundant number, since it is smaller than the sum of its proper divisors (1398457962).

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

665714070 is a wasteful number, since it uses less digits than its factorization.

665714070 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45986 (or 45983 counting only the distinct ones).

The product of its (nonzero) digits is 35280, while the sum is 36.

The square root of 665714070 is about 25801.4354251852. The cubic root of 665714070 is about 873.1641814789.

The spelling of 665714070 in words is "six hundred sixty-five million, seven hundred fourteen thousand, seventy".