64700703666 has 32 divisors (see below), whose sum is σ = 144460785600. Its totient is φ = 21464684640.

The previous prime is 64700703643. The next prime is 64700703689. The reversal of 64700703666 is 66630700746.

64700703666 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (64700703643) and next prime (64700703689).

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, 2827851 + ... + 2850638.

It is an arithmetic number, because the mean of its divisors is an integer number (4514399550).

Almost surely, 2^64700703666 is an apocalyptic number.

64700703666 is an abundant number, since it is smaller than the sum of its proper divisors (79760081934).

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

64700703666 is a wasteful number, since it uses less digits than its factorization.

64700703666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5678711 (or 5678705 counting only the distinct ones).

The product of its (nonzero) digits is 762048, while the sum is 45.

The spelling of 64700703666 in words is "sixty-four billion, seven hundred million, seven hundred three thousand, six hundred sixty-six".