616471513 has 4 divisors (see below), whose sum is σ = 704538880. Its totient is φ = 528404148.

The previous prime is 616471483. The next prime is 616471547. The reversal of 616471513 is 315174616.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 616471513 - 2⁵ = 616471481 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (616475513) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44033673 + ... + 44033686.

It is an arithmetic number, because the mean of its divisors is an integer number (176134720).

Almost surely, 2^616471513 is an apocalyptic number.

It is an amenable number.

616471513 is a deficient number, since it is larger than the sum of its proper divisors (88067367).

616471513 is an equidigital number, since it uses as much as digits as its factorization.

616471513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88067366.

The product of its digits is 15120, while the sum is 34.

The square root of 616471513 is about 24828.8443750409. The cubic root of 616471513 is about 851.0812137149.

It can be divided in two parts, 6164 and 71513, that added together give a palindrome (77677).

The spelling of 616471513 in words is "six hundred sixteen million, four hundred seventy-one thousand, five hundred thirteen".