100609615 has 4 divisors (see below), whose sum is σ = 120731544. Its totient is φ = 80487688.

The previous prime is 100609609. The next prime is 100609681. The reversal of 100609615 is 516906001.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 516906001 = 19 ⋅27205579.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-100609615 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10060957 + ... + 10060966.

It is an arithmetic number, because the mean of its divisors is an integer number (30182886).

Almost surely, 2^100609615 is an apocalyptic number.

100609615 is a deficient number, since it is larger than the sum of its proper divisors (20121929).

100609615 is an equidigital number, since it uses as much as digits as its factorization.

100609615 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20121928.

The product of its (nonzero) digits is 1620, while the sum is 28.

The square root of 100609615 is about 10030.4344372515. The cubic root of 100609615 is about 465.1001672676.

The spelling of 100609615 in words is "one hundred million, six hundred nine thousand, six hundred fifteen".