616404459 has 16 divisors (see below), whose sum is σ = 897260544. Its totient is φ = 373298400.

The previous prime is 616404457. The next prime is 616404461. The reversal of 616404459 is 954404616.

It is an interprime number because it is at equal distance from previous prime (616404457) and next prime (616404461).

It is not a de Polignac number, because 616404459 - 2¹ = 616404457 is a prime.

It is not an unprimeable number, because it can be changed into a prime (616404457) 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, 43014 + ... + 55524.

It is an arithmetic number, because the mean of its divisors is an integer number (56078784).

Almost surely, 2^616404459 is an apocalyptic number.

616404459 is a deficient number, since it is larger than the sum of its proper divisors (280856085).

616404459 is a wasteful number, since it uses less digits than its factorization.

616404459 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14018.

The product of its (nonzero) digits is 103680, while the sum is 39.

The square root of 616404459 is about 24827.4940136938. The cubic root of 616404459 is about 851.0503550471.

The spelling of 616404459 in words is "six hundred sixteen million, four hundred four thousand, four hundred fifty-nine".