620072688 has 40 divisors (see below), whose sum is σ = 1696083408. Its totient is φ = 194532352.

The previous prime is 620072641. The next prime is 620072711. The reversal of 620072688 is 886270026.

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, 379131 + ... + 380762.

Almost surely, 2^620072688 is an apocalyptic number.

620072688 is a gapful number since it is divisible by the number (68) formed by its first and last digit.

It is an amenable number.

620072688 is an abundant number, since it is smaller than the sum of its proper divisors (1076010720).

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

620072688 is a wasteful number, since it uses less digits than its factorization.

620072688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 759921 (or 759915 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 39.

The square root of 620072688 is about 24901.2587633638. The cubic root of 620072688 is about 852.7352202494.

The spelling of 620072688 in words is "six hundred twenty million, seventy-two thousand, six hundred eighty-eight".