100756945 has 16 divisors (see below), whose sum is σ = 123516288. Its totient is φ = 78883200.

The previous prime is 100756939. The next prime is 100756949. The reversal of 100756945 is 549657001.

It is not a de Polignac number, because 100756945 - 2¹¹ = 100754897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100756949) 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, 55045 + ... + 56845.

It is an arithmetic number, because the mean of its divisors is an integer number (7719768).

Almost surely, 2^100756945 is an apocalyptic number.

It is an amenable number.

100756945 is a deficient number, since it is larger than the sum of its proper divisors (22759343).

100756945 is a wasteful number, since it uses less digits than its factorization.

100756945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2040.

The product of its (nonzero) digits is 37800, while the sum is 37.

The square root of 100756945 is about 10037.7758990725. The cubic root of 100756945 is about 465.3270832437.

It can be divided in two parts, 10075 and 6945, that added together give a triangular number (17020 = T₁₈₄).

The spelling of 100756945 in words is "one hundred million, seven hundred fifty-six thousand, nine hundred forty-five".