100672521 has 8 divisors (see below), whose sum is σ = 142125984. Its totient is φ = 63167040.

The previous prime is 100672513. The next prime is 100672547. The reversal of 100672521 is 125276001.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 100672521 - 2³ = 100672513 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 100672491 and 100672500.

It is not an unprimeable number, because it can be changed into a prime (100672501) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 986935 + ... + 987036.

It is an arithmetic number, because the mean of its divisors is an integer number (17765748).

Almost surely, 2^100672521 is an apocalyptic number.

It is an amenable number.

100672521 is a deficient number, since it is larger than the sum of its proper divisors (41453463).

100672521 is a wasteful number, since it uses less digits than its factorization.

100672521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1973991.

The product of its (nonzero) digits is 840, while the sum is 24.

The square root of 100672521 is about 10033.5697037495. The cubic root of 100672521 is about 465.1970814491.

The spelling of 100672521 in words is "one hundred million, six hundred seventy-two thousand, five hundred twenty-one".