616575994 has 4 divisors (see below), whose sum is σ = 924863994. Its totient is φ = 308287996.

The previous prime is 616575991. The next prime is 616576001. The reversal of 616575994 is 499575616.

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., 385140625 + 231435369 = 19625^2 + 15213^2 .

It is not an unprimeable number, because it can be changed into a prime (616575991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 154143997 + ... + 154144000.

Almost surely, 2^616575994 is an apocalyptic number.

616575994 is a deficient number, since it is larger than the sum of its proper divisors (308288000).

616575994 is a wasteful number, since it uses less digits than its factorization.

616575994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 308287999.

The product of its digits is 2041200, while the sum is 52.

The square root of 616575994 is about 24830.9483105257. The cubic root of 616575994 is about 851.1292920615.

The spelling of 616575994 in words is "six hundred sixteen million, five hundred seventy-five thousand, nine hundred ninety-four".