479786661 has 12 divisors (see below), whose sum is σ = 695286592. Its totient is φ = 318814056.

The previous prime is 479786641. The next prime is 479786677. The reversal of 479786661 is 166687974.

It is a happy number.

It is not a de Polignac number, because 479786661 - 2¹⁰ = 479785637 is a prime.

It is a super-3 number, since 3×479786661³ (a number of 27 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 479786598 and 479786607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (479786611) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 84061 + ... + 89586.

Almost surely, 2^479786661 is an apocalyptic number.

It is an amenable number.

479786661 is a deficient number, since it is larger than the sum of its proper divisors (215499931).

479786661 is a wasteful number, since it uses less digits than its factorization.

479786661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173960 (or 173957 counting only the distinct ones).

The product of its digits is 3048192, while the sum is 54.

The square root of 479786661 is about 21904.0329848181. The cubic root of 479786661 is about 782.8575118846.

The spelling of 479786661 in words is "four hundred seventy-nine million, seven hundred eighty-six thousand, six hundred sixty-one".