616149623 has 4 divisors (see below), whose sum is σ = 630478728. Its totient is φ = 601820520.

The previous prime is 616149619. The next prime is 616149629. The reversal of 616149623 is 326941616.

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 616149623 - 2² = 616149619 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (616149629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7164488 + ... + 7164573.

It is an arithmetic number, because the mean of its divisors is an integer number (157619682).

Almost surely, 2^616149623 is an apocalyptic number.

616149623 is a deficient number, since it is larger than the sum of its proper divisors (14329105).

616149623 is a wasteful number, since it uses less digits than its factorization.

616149623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14329104.

The product of its digits is 46656, while the sum is 38.

The square root of 616149623 is about 24822.3613502020. The cubic root of 616149623 is about 850.9330575165.

The spelling of 616149623 in words is "six hundred sixteen million, one hundred forty-nine thousand, six hundred twenty-three".