616464 has 40 divisors (see below), whose sum is σ = 1770720. Its totient is φ = 205344.

The previous prime is 616463. The next prime is 616481. The reversal of 616464 is 464616.

616464 is a `hidden beast` number, since 616 + 46 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a nude number because it is divisible by every one of its digits.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 616464.

It is not an unprimeable number, because it can be changed into a prime (616463) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 282 + ... + 1145.

It is an arithmetic number, because the mean of its divisors is an integer number (44268).

2⁶¹⁶⁴⁶⁴ is an apocalyptic number.

It is an amenable number.

616464 is an abundant number, since it is smaller than the sum of its proper divisors (1154256).

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

616464 is a wasteful number, since it uses less digits than its factorization.

616464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1444 (or 1432 counting only the distinct ones).

The product of its digits is 3456, while the sum is 27.

The square root of 616464 is about 785.1522145419. The cubic root of 616464 is about 85.1077756297.

The spelling of 616464 in words is "six hundred sixteen thousand, four hundred sixty-four".