620692789 has 8 divisors (see below), whose sum is σ = 648208512. Its totient is φ = 593221200.

The previous prime is 620692783. The next prime is 620692801. The reversal of 620692789 is 987296026.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 620692789 - 2³ = 620692781 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 (620692781) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19552 + ... + 40294.

It is an arithmetic number, because the mean of its divisors is an integer number (81026064).

Almost surely, 2^620692789 is an apocalyptic number.

It is an amenable number.

620692789 is a deficient number, since it is larger than the sum of its proper divisors (27515723).

620692789 is a wasteful number, since it uses less digits than its factorization.

620692789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22067.

The product of its (nonzero) digits is 653184, while the sum is 49.

The square root of 620692789 is about 24913.7068498447. The cubic root of 620692789 is about 853.0193835968.

The spelling of 620692789 in words is "six hundred twenty million, six hundred ninety-two thousand, seven hundred eighty-nine".