100798745 has 4 divisors (see below), whose sum is σ = 120958500. Its totient is φ = 80638992.

The previous prime is 100798723. The next prime is 100798759. The reversal of 100798745 is 547897001.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 547897001 = 47 ⋅11657383.

It can be written as a sum of positive squares in 2 ways, for example, as 13039321 + 87759424 = 3611^2 + 9368^2 .

It is a cyclic number.

It is not a de Polignac number, because 100798745 - 2²² = 96604441 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10079870 + ... + 10079879.

It is an arithmetic number, because the mean of its divisors is an integer number (30239625).

Almost surely, 2^100798745 is an apocalyptic number.

It is an amenable number.

100798745 is a deficient number, since it is larger than the sum of its proper divisors (20159755).

100798745 is an equidigital number, since it uses as much as digits as its factorization.

100798745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20159754.

The product of its (nonzero) digits is 70560, while the sum is 41.

The square root of 100798745 is about 10039.8578177183. The cubic root of 100798745 is about 465.3914228381.

The spelling of 100798745 in words is "one hundred million, seven hundred ninety-eight thousand, seven hundred forty-five".