616315801 has 4 divisors (see below), whose sum is σ = 637568100. Its totient is φ = 595063504.

The previous prime is 616315769. The next prime is 616315811. The reversal of 616315801 is 108513616.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 530104576 + 86211225 = 23024^2 + 9285^2 .

It is a cyclic number.

It is not a de Polignac number, because 616315801 - 2⁵ = 616315769 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (616315811) 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, 10626106 + ... + 10626163.

It is an arithmetic number, because the mean of its divisors is an integer number (159392025).

Almost surely, 2^616315801 is an apocalyptic number.

It is an amenable number.

616315801 is a deficient number, since it is larger than the sum of its proper divisors (21252299).

616315801 is a wasteful number, since it uses less digits than its factorization.

616315801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21252298.

The product of its (nonzero) digits is 4320, while the sum is 31.

The square root of 616315801 is about 24825.7084692461. The cubic root of 616315801 is about 851.0095506483.

The spelling of 616315801 in words is "six hundred sixteen million, three hundred fifteen thousand, eight hundred one".