620040764 has 24 divisors (see below), whose sum is σ = 1282844640. Its totient is φ = 256568256.

The previous prime is 620040721. The next prime is 620040787. The reversal of 620040764 is 467040026.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 380987 + ... + 382610.

It is an arithmetic number, because the mean of its divisors is an integer number (53451860).

Almost surely, 2^620040764 is an apocalyptic number.

It is an amenable number.

620040764 is an abundant number, since it is smaller than the sum of its proper divisors (662803876).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

620040764 is a wasteful number, since it uses less digits than its factorization.

620040764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 763637 (or 763635 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 29.

The square root of 620040764 is about 24900.6177433412. The cubic root of 620040764 is about 852.7205858434.

It can be divided in two parts, 6200 and 40764, that added together give a palindrome (46964).

The spelling of 620040764 in words is "six hundred twenty million, forty thousand, seven hundred sixty-four".