620769776 has 20 divisors (see below), whose sum is σ = 1312081944. Its totient is φ = 282168000.

The previous prime is 620769763. The next prime is 620769791. The reversal of 620769776 is 677967026.

It is a super-2 number, since 2×620769776² = 770710229590180352, which contains 22 as substring.

It is a congruent number.

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, 1763375 + ... + 1763726.

Almost surely, 2^620769776 is an apocalyptic number.

It is an amenable number.

620769776 is an abundant number, since it is smaller than the sum of its proper divisors (691312168).

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

620769776 is a wasteful number, since it uses less digits than its factorization.

620769776 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3527120 (or 3527114 counting only the distinct ones).

The product of its (nonzero) digits is 1333584, while the sum is 50.

The square root of 620769776 is about 24915.2518751065. The cubic root of 620769776 is about 853.0546499366.

The spelling of 620769776 in words is "six hundred twenty million, seven hundred sixty-nine thousand, seven hundred seventy-six".