616580646 has 32 divisors (see below), whose sum is σ = 1347705216. Its totient is φ = 186504000.

The previous prime is 616580623. The next prime is 616580651. The reversal of 616580646 is 646085616.

It is a junction number, because it is equal to n+sod(n) for n = 616580598 and 616580607.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29506 + ... + 45866.

It is an arithmetic number, because the mean of its divisors is an integer number (42115788).

Almost surely, 2^616580646 is an apocalyptic number.

616580646 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

616580646 is an abundant number, since it is smaller than the sum of its proper divisors (731124570).

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

616580646 is a wasteful number, since it uses less digits than its factorization.

616580646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16948.

The product of its (nonzero) digits is 207360, while the sum is 42.

The square root of 616580646 is about 24831.0419837751. The cubic root of 616580646 is about 851.1314326160.

The spelling of 616580646 in words is "six hundred sixteen million, five hundred eighty thousand, six hundred forty-six".