947457664 has 32 divisors (see below), whose sum is σ = 1889072640. Its totient is φ = 473337600.

The previous prime is 947457649. The next prime is 947457683. The reversal of 947457664 is 466754749.

It is a tau number, because it is divible by the number of its divisors (32).

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, 210639 + ... + 215089.

It is an arithmetic number, because the mean of its divisors is an integer number (59033520).

Almost surely, 2^947457664 is an apocalyptic number.

It is an amenable number.

947457664 is a deficient number, since it is larger than the sum of its proper divisors (941614976).

947457664 is a wasteful number, since it uses less digits than its factorization.

947457664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6128 (or 6116 counting only the distinct ones).

The product of its digits is 5080320, while the sum is 52.

The square root of 947457664 is about 30780.8002495062. The cubic root of 947457664 is about 982.1698637222.

The spelling of 947457664 in words is "nine hundred forty-seven million, four hundred fifty-seven thousand, six hundred sixty-four".