100776961 has 4 divisors (see below), whose sum is σ = 105158592. Its totient is φ = 96395332.

The previous prime is 100776953. The next prime is 100776967. The reversal of 100776961 is 169677001.

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, and also an emirpimes, since its reverse is a distinct semiprime: 169677001 = 13 ⋅13052077.

It is a cyclic number.

It is not a de Polignac number, because 100776961 - 2³ = 100776953 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 100776961.

It is not an unprimeable number, because it can be changed into a prime (100776967) 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, 2190781 + ... + 2190826.

It is an arithmetic number, because the mean of its divisors is an integer number (26289648).

Almost surely, 2^100776961 is an apocalyptic number.

It is an amenable number.

100776961 is a deficient number, since it is larger than the sum of its proper divisors (4381631).

100776961 is an equidigital number, since it uses as much as digits as its factorization.

100776961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4381630.

The product of its (nonzero) digits is 15876, while the sum is 37.

The square root of 100776961 is about 10038.7728831765. The cubic root of 100776961 is about 465.3578945861.

The spelling of 100776961 in words is "one hundred million, seven hundred seventy-six thousand, nine hundred sixty-one".