616390405 has 16 divisors (see below), whose sum is σ = 762825600. Its totient is φ = 477910720.

The previous prime is 616390367. The next prime is 616390417. The reversal of 616390405 is 504093616.

It is not a de Polignac number, because 616390405 - 2¹³ = 616382213 is a prime.

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, 6231 + ... + 35659.

It is an arithmetic number, because the mean of its divisors is an integer number (47676600).

Almost surely, 2^616390405 is an apocalyptic number.

It is an amenable number.

616390405 is a deficient number, since it is larger than the sum of its proper divisors (146435195).

616390405 is a wasteful number, since it uses less digits than its factorization.

616390405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29564.

The product of its (nonzero) digits is 19440, while the sum is 34.

The square root of 616390405 is about 24827.2109790850. The cubic root of 616390405 is about 851.0438870252.

The spelling of 616390405 in words is "six hundred sixteen million, three hundred ninety thousand, four hundred five".