620738245767 has 4 divisors (see below), whose sum is σ = 827650994360. Its totient is φ = 413825497176.

The previous prime is 620738245747. The next prime is 620738245783. The reversal of 620738245767 is 767542837026.

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

It is not a de Polignac number, because 620738245767 - 2¹² = 620738241671 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (620738245747) 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, 103456374292 + ... + 103456374297.

It is an arithmetic number, because the mean of its divisors is an integer number (206912748590).

Almost surely, 2^620738245767 is an apocalyptic number.

620738245767 is a deficient number, since it is larger than the sum of its proper divisors (206912748593).

620738245767 is a wasteful number, since it uses less digits than its factorization.

620738245767 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206912748592.

The product of its (nonzero) digits is 23708160, while the sum is 57.

The spelling of 620738245767 in words is "six hundred twenty billion, seven hundred thirty-eight million, two hundred forty-five thousand, seven hundred sixty-seven".