665701070 has 8 divisors (see below), whose sum is σ = 1198261944. Its totient is φ = 266280424.

The previous prime is 665701067. The next prime is 665701087. The reversal of 665701070 is 70107566.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33285044 + ... + 33285063.

It is an arithmetic number, because the mean of its divisors is an integer number (149782743).

Almost surely, 2^665701070 is an apocalyptic number.

665701070 is a deficient number, since it is larger than the sum of its proper divisors (532560874).

665701070 is a wasteful number, since it uses less digits than its factorization.

665701070 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66570114.

The product of its (nonzero) digits is 8820, while the sum is 32.

The square root of 665701070 is about 25801.1834999870. The cubic root of 665701070 is about 873.1584977533.

The spelling of 665701070 in words is "six hundred sixty-five million, seven hundred one thousand, seventy".