111677961 has 4 divisors (see below), whose sum is σ = 148903952. Its totient is φ = 74451972.

The previous prime is 111677957. The next prime is 111677977. The reversal of 111677961 is 169776111.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 111677961 - 2² = 111677957 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111677941) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18612991 + ... + 18612996.

It is an arithmetic number, because the mean of its divisors is an integer number (37225988).

Almost surely, 2^111677961 is an apocalyptic number.

It is an amenable number.

111677961 is a deficient number, since it is larger than the sum of its proper divisors (37225991).

111677961 is an equidigital number, since it uses as much as digits as its factorization.

111677961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37225990.

The product of its digits is 15876, while the sum is 39.

The square root of 111677961 is about 10567.7793788478. The cubic root of 111677961 is about 481.5660094391.

The spelling of 111677961 in words is "one hundred eleven million, six hundred seventy-seven thousand, nine hundred sixty-one".