620155994 has 8 divisors (see below), whose sum is σ = 935941440. Its totient is φ = 308175516.

The previous prime is 620155993. The next prime is 620156051. The reversal of 620155994 is 499551026.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (620155993) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 950834 + ... + 951485.

It is an arithmetic number, because the mean of its divisors is an integer number (116992680).

Almost surely, 2^620155994 is an apocalyptic number.

620155994 is a deficient number, since it is larger than the sum of its proper divisors (315785446).

620155994 is a wasteful number, since it uses less digits than its factorization.

620155994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1902484.

The product of its (nonzero) digits is 97200, while the sum is 41.

The square root of 620155994 is about 24902.9314338694. The cubic root of 620155994 is about 852.7734065140.

The spelling of 620155994 in words is "six hundred twenty million, one hundred fifty-five thousand, nine hundred ninety-four".