620151540 has 24 divisors (see below), whose sum is σ = 1736424480. Its totient is φ = 165373728.

The previous prime is 620151529. The next prime is 620151557. The reversal of 620151540 is 45151026.

It is a self number, because there is not a number n which added to its sum of digits gives 620151540.

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, 5167870 + ... + 5167989.

It is an arithmetic number, because the mean of its divisors is an integer number (72351020).

Almost surely, 2^620151540 is an apocalyptic number.

620151540 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

620151540 is an abundant number, since it is smaller than the sum of its proper divisors (1116272940).

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

620151540 is a wasteful number, since it uses less digits than its factorization.

620151540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10335871 (or 10335869 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 24.

The square root of 620151540 is about 24902.8420064859. The cubic root of 620151540 is about 852.7713649514.

The spelling of 620151540 in words is "six hundred twenty million, one hundred fifty-one thousand, five hundred forty".