616562540 has 48 divisors (see below), whose sum is σ = 1486840320. Its totient is φ = 212402880.

The previous prime is 616562539. The next prime is 616562549. The reversal of 616562540 is 45265616.

It is a self number, because there is not a number n which added to its sum of digits gives 616562540.

It is not an unprimeable number, because it can be changed into a prime (616562549) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 69572 + ... + 77931.

It is an arithmetic number, because the mean of its divisors is an integer number (30975840).

Almost surely, 2^616562540 is an apocalyptic number.

It is an amenable number.

616562540 is an abundant number, since it is smaller than the sum of its proper divisors (870277780).

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

616562540 is a wasteful number, since it uses less digits than its factorization.

616562540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147542 (or 147540 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 35.

The square root of 616562540 is about 24830.6773971231. The cubic root of 616562540 is about 851.1231013260.

The spelling of 616562540 in words is "six hundred sixteen million, five hundred sixty-two thousand, five hundred forty".