616642812 has 36 divisors (see below), whose sum is σ = 1563110640. Its totient is φ = 204970752.

The previous prime is 616642801. The next prime is 616642823. The reversal of 616642812 is 218246616.

616642812 is a `hidden beast` number, since 6 + 1 + 6 + 642 + 8 + 1 + 2 = 666.

It is an interprime number because it is at equal distance from previous prime (616642801) and next prime (616642823).

It is a tau number, because it is divible by the number of its divisors (36).

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10933 + ... + 36780.

It is an arithmetic number, because the mean of its divisors is an integer number (43419740).

Almost surely, 2^616642812 is an apocalyptic number.

It is an amenable number.

616642812 is an abundant number, since it is smaller than the sum of its proper divisors (946467828).

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

616642812 is a wasteful number, since it uses less digits than its factorization.

616642812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48082 (or 48077 counting only the distinct ones).

The product of its digits is 27648, while the sum is 36.

The square root of 616642812 is about 24832.2937321545. The cubic root of 616642812 is about 851.1600364214.

The spelling of 616642812 in words is "six hundred sixteen million, six hundred forty-two thousand, eight hundred twelve".