315780664 has 8 divisors (see below), whose sum is σ = 592088760. Its totient is φ = 157890328.

The previous prime is 315780653. The next prime is 315780667. The reversal of 315780664 is 466087513.

It is a happy number.

315780664 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (315780667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19736284 + ... + 19736299.

It is an arithmetic number, because the mean of its divisors is an integer number (74011095).

Almost surely, 2^315780664 is an apocalyptic number.

It is an amenable number.

315780664 is a deficient number, since it is larger than the sum of its proper divisors (276308096).

315780664 is a wasteful number, since it uses less digits than its factorization.

It is an anagram of its base 9 representation: 315780664 = (730168564)₉.

315780664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39472589 (or 39472585 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 40.

The square root of 315780664 is about 17770.2184567326. The cubic root of 315780664 is about 680.9708335846.

The spelling of 315780664 in words is "three hundred fifteen million, seven hundred eighty thousand, six hundred sixty-four".