616377653 has 8 divisors (see below), whose sum is σ = 654699672. Its totient is φ = 578285056.

The previous prime is 616377637. The next prime is 616377683. The reversal of 616377653 is 356773616.

It can be written as a sum of positive squares in 4 ways, for example, as 1684804 + 614692849 = 1298^2 + 24793^2 .

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

It is not a de Polignac number, because 616377653 - 2⁴ = 616377637 is a prime.

It is a super-2 number, since 2×616377653² = 759842822235576818, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (616377623) 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, 51800 + ... + 62577.

It is an arithmetic number, because the mean of its divisors is an integer number (81837459).

Almost surely, 2^616377653 is an apocalyptic number.

It is an amenable number.

616377653 is a deficient number, since it is larger than the sum of its proper divisors (38322019).

616377653 is a wasteful number, since it uses less digits than its factorization.

616377653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114711.

The product of its digits is 476280, while the sum is 44.

The square root of 616377653 is about 24826.9541627643. The cubic root of 616377653 is about 851.0380181330.

The spelling of 616377653 in words is "six hundred sixteen million, three hundred seventy-seven thousand, six hundred fifty-three".