415397661 has 16 divisors (see below), whose sum is σ = 639135744. Its totient is φ = 235064304.

The previous prime is 415397639. The next prime is 415397663. The reversal of 415397661 is 166793514.

It is not a de Polignac number, because 415397661 - 2⁹ = 415397149 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (415397663) 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, 93861 + ... + 98186.

It is an arithmetic number, because the mean of its divisors is an integer number (39945984).

Almost surely, 2^415397661 is an apocalyptic number.

It is an amenable number.

415397661 is a deficient number, since it is larger than the sum of its proper divisors (223738083).

415397661 is a wasteful number, since it uses less digits than its factorization.

415397661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192160.

The product of its digits is 136080, while the sum is 42.

The square root of 415397661 is about 20381.3066558550. The cubic root of 415397661 is about 746.1417629326.

The spelling of 415397661 in words is "four hundred fifteen million, three hundred ninety-seven thousand, six hundred sixty-one".