116721671 has 16 divisors (see below), whose sum is σ = 130141728. Its totient is φ = 103795200.

The previous prime is 116721667. The next prime is 116721679. The reversal of 116721671 is 176127611.

It is a cyclic number.

It is not a de Polignac number, because 116721671 - 2² = 116721667 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (116721679) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 109481 + ... + 110541.

It is an arithmetic number, because the mean of its divisors is an integer number (8133858).

Almost surely, 2^116721671 is an apocalyptic number.

116721671 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

116721671 is a deficient number, since it is larger than the sum of its proper divisors (13420057).

116721671 is a wasteful number, since it uses less digits than its factorization.

116721671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1282.

The product of its digits is 3528, while the sum is 32.

The square root of 116721671 is about 10803.7804031737. The cubic root of 116721671 is about 488.7091820361.

The spelling of 116721671 in words is "one hundred sixteen million, seven hundred twenty-one thousand, six hundred seventy-one".