620744695 has 4 divisors (see below), whose sum is σ = 744893640. Its totient is φ = 496595752.

The previous prime is 620744629. The next prime is 620744699. The reversal of 620744695 is 596447026.

It is a happy number.

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 620744695 - 2⁹ = 620744183 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (620744699) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 62074465 + ... + 62074474.

It is an arithmetic number, because the mean of its divisors is an integer number (186223410).

Almost surely, 2^620744695 is an apocalyptic number.

620744695 is a deficient number, since it is larger than the sum of its proper divisors (124148945).

620744695 is a wasteful number, since it uses less digits than its factorization.

620744695 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124148944.

The product of its (nonzero) digits is 362880, while the sum is 43.

The square root of 620744695 is about 24914.7485437843. The cubic root of 620744695 is about 853.0431611084.

The spelling of 620744695 in words is "six hundred twenty million, seven hundred forty-four thousand, six hundred ninety-five".