1616656672 has 24 divisors (see below), whose sum is σ = 3187078272. Its totient is φ = 807240000.

The previous prime is 1616656669. The next prime is 1616656739. The reversal of 1616656672 is 2766566161.

It is a super-2 number, since 2×1616656672² = 5227157590244231168, which contains 22 as substring.

It is a Smith number, since the sum of its digits (46) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9604 + ... + 57667.

It is an arithmetic number, because the mean of its divisors is an integer number (132794928).

Almost surely, 2^1616656672 is an apocalyptic number.

It is an amenable number.

1616656672 is a deficient number, since it is larger than the sum of its proper divisors (1570421600).

1616656672 is an equidigital number, since it uses as much as digits as its factorization.

1616656672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68032 (or 68024 counting only the distinct ones).

The product of its digits is 544320, while the sum is 46.

The square root of 1616656672 is about 40207.6693181786. The cubic root of 1616656672 is about 1173.6517922885.

The spelling of 1616656672 in words is "one billion, six hundred sixteen million, six hundred fifty-six thousand, six hundred seventy-two".