620674763 has 4 divisors (see below), whose sum is σ = 621001128. Its totient is φ = 620348400.

The previous prime is 620674759. The next prime is 620674819. The reversal of 620674763 is 367476026.

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

It is a cyclic number.

It is not a de Polignac number, because 620674763 - 2² = 620674759 is a prime.

It is a super-2 number, since 2×620674763² = 770474322850212338, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 620674763.

It is not an unprimeable number, because it can be changed into a prime (620674723) 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, 160313 + ... + 164138.

It is an arithmetic number, because the mean of its divisors is an integer number (155250282).

Almost surely, 2^620674763 is an apocalyptic number.

620674763 is a deficient number, since it is larger than the sum of its proper divisors (326365).

620674763 is a wasteful number, since it uses less digits than its factorization.

620674763 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 326364.

The product of its (nonzero) digits is 254016, while the sum is 41.

The square root of 620674763 is about 24913.3450784916. The cubic root of 620674763 is about 853.0111257939.

The spelling of 620674763 in words is "six hundred twenty million, six hundred seventy-four thousand, seven hundred sixty-three".