814976661 has 8 divisors (see below), whose sum is σ = 1092266560. Its totient is φ = 540502272.

The previous prime is 814976627. The next prime is 814976681. The reversal of 814976661 is 166679418.

It is a happy number.

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

It is not a de Polignac number, because 814976661 - 2⁶ = 814976597 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 814976661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (814976611) 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, 703201 + ... + 704358.

It is an arithmetic number, because the mean of its divisors is an integer number (136533320).

Almost surely, 2^814976661 is an apocalyptic number.

It is an amenable number.

814976661 is a deficient number, since it is larger than the sum of its proper divisors (277289899).

814976661 is a wasteful number, since it uses less digits than its factorization.

814976661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1407755.

The product of its digits is 435456, while the sum is 48.

The square root of 814976661 is about 28547.7960795575. The cubic root of 814976661 is about 934.0749469485.

The spelling of 814976661 in words is "eight hundred fourteen million, nine hundred seventy-six thousand, six hundred sixty-one".