620958240 has 144 divisors (see below), whose sum is σ = 2421776448. Its totient is φ = 141931008.

The previous prime is 620958199. The next prime is 620958253. The reversal of 620958240 is 42859026.

It is a happy number.

620958240 is a `hidden beast` number, since 620 + 9 + 5 + 8 + 24 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 620958195 and 620958204.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 20722 + ... + 40881.

It is an arithmetic number, because the mean of its divisors is an integer number (16817892).

Almost surely, 2^620958240 is an apocalyptic number.

620958240 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

620958240 is an abundant number, since it is smaller than the sum of its proper divisors (1800818208).

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

620958240 is a wasteful number, since it uses less digits than its factorization.

620958240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61631 (or 61620 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 620958240 is about 24919.0336891301. The cubic root of 620958240 is about 853.1409695517.

The spelling of 620958240 in words is "six hundred twenty million, nine hundred fifty-eight thousand, two hundred forty".