616217087 has 4 divisors (see below), whose sum is σ = 616395816. Its totient is φ = 616038360.

The previous prime is 616217083. The next prime is 616217123. The reversal of 616217087 is 780712616.

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

It is a cyclic number.

It is not a de Polignac number, because 616217087 - 2² = 616217083 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 616217087.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (616217083) 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, 84089 + ... + 91122.

It is an arithmetic number, because the mean of its divisors is an integer number (154098954).

Almost surely, 2^616217087 is an apocalyptic number.

616217087 is a deficient number, since it is larger than the sum of its proper divisors (178729).

616217087 is a wasteful number, since it uses less digits than its factorization.

616217087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178728.

The product of its (nonzero) digits is 28224, while the sum is 38.

The square root of 616217087 is about 24823.7202489877. The cubic root of 616217087 is about 850.9641134216.

The spelling of 616217087 in words is "six hundred sixteen million, two hundred seventeen thousand, eighty-seven".