616645077 has 8 divisors (see below), whose sum is σ = 822438816. Its totient is φ = 410974032.

The previous prime is 616645031. The next prime is 616645079. The reversal of 616645077 is 770546616.

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

It is not a de Polignac number, because 616645077 - 2⁷ = 616644949 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (616645079) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18223 + ... + 39564.

It is an arithmetic number, because the mean of its divisors is an integer number (102804852).

Almost surely, 2^616645077 is an apocalyptic number.

It is an amenable number.

616645077 is a deficient number, since it is larger than the sum of its proper divisors (205793739).

616645077 is a wasteful number, since it uses less digits than its factorization.

616645077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61347.

The product of its (nonzero) digits is 211680, while the sum is 42.

The square root of 616645077 is about 24832.3393380487. The cubic root of 616645077 is about 851.1610785564.

The spelling of 616645077 in words is "six hundred sixteen million, six hundred forty-five thousand, seventy-seven".