315617066 has 4 divisors (see below), whose sum is σ = 473425602. Its totient is φ = 157808532.

The previous prime is 315617047. The next prime is 315617069. The reversal of 315617066 is 660716513.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 188265841 + 127351225 = 13721^2 + 11285^2 .

It is a super-2 number, since 2×315617066² = 199228264700896712, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (315617069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78904265 + ... + 78904268.

Almost surely, 2^315617066 is an apocalyptic number.

315617066 is a deficient number, since it is larger than the sum of its proper divisors (157808536).

315617066 is a wasteful number, since it uses less digits than its factorization.

315617066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157808535.

The product of its (nonzero) digits is 22680, while the sum is 35.

The square root of 315617066 is about 17765.6147093198. The cubic root of 315617066 is about 680.8532153309.

The spelling of 315617066 in words is "three hundred fifteen million, six hundred seventeen thousand, sixty-six".