104512661 has 24 divisors (see below), whose sum is σ = 120083040. Its totient is φ = 90810720.

The previous prime is 104512633. The next prime is 104512663. The reversal of 104512661 is 166215401.

It is not a de Polignac number, because 104512661 - 2¹⁰ = 104511637 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 104512661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (104512663) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 275570 + ... + 275948.

It is an arithmetic number, because the mean of its divisors is an integer number (5003460).

Almost surely, 2^104512661 is an apocalyptic number.

104512661 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

104512661 is the 5465-th centered heptagonal number.

It is an amenable number.

104512661 is a deficient number, since it is larger than the sum of its proper divisors (15570379).

104512661 is a wasteful number, since it uses less digits than its factorization.

104512661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 497 (or 486 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 104512661 is about 10223.1434011267. The cubic root of 104512661 is about 471.0383877307.

The spelling of 104512661 in words is "one hundred four million, five hundred twelve thousand, six hundred sixty-one".