616172390 has 8 divisors (see below), whose sum is σ = 1109110320. Its totient is φ = 246468952.

The previous prime is 616172363. The next prime is 616172393. The reversal of 616172390 is 93271616.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 616172390.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (616172393) 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, 30808610 + ... + 30808629.

It is an arithmetic number, because the mean of its divisors is an integer number (138638790).

Almost surely, 2^616172390 is an apocalyptic number.

616172390 is a deficient number, since it is larger than the sum of its proper divisors (492937930).

616172390 is a wasteful number, since it uses less digits than its factorization.

616172390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61617246.

The product of its (nonzero) digits is 13608, while the sum is 35.

The square root of 616172390 is about 24822.8199445591. The cubic root of 616172390 is about 850.9435381712.

The spelling of 616172390 in words is "six hundred sixteen million, one hundred seventy-two thousand, three hundred ninety".