620133644 has 12 divisors (see below), whose sum is σ = 1168713504. Its totient is φ = 286215504.

The previous prime is 620133629. The next prime is 620133737. The reversal of 620133644 is 446331026.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5962772 + ... + 5962875.

It is an arithmetic number, because the mean of its divisors is an integer number (97392792).

Almost surely, 2^620133644 is an apocalyptic number.

It is an amenable number.

620133644 is a deficient number, since it is larger than the sum of its proper divisors (548579860).

620133644 is a wasteful number, since it uses less digits than its factorization.

620133644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11925664 (or 11925662 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 29.

The square root of 620133644 is about 24902.4826874752. The cubic root of 620133644 is about 852.7631619332.

The spelling of 620133644 in words is "six hundred twenty million, one hundred thirty-three thousand, six hundred forty-four".