474897661 has 6 divisors (see below), whose sum is σ = 552432030. Its totient is φ = 407055096.

The previous prime is 474897659. The next prime is 474897673. The reversal of 474897661 is 166798474.

It can be written as a sum of positive squares in only one way, i.e., 438064900 + 36832761 = 20930^2 + 6069^2 .

It is not a de Polignac number, because 474897661 - 2¹ = 474897659 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 474897599 and 474897608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (474897611) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4845846 + ... + 4845943.

It is an arithmetic number, because the mean of its divisors is an integer number (92072005).

Almost surely, 2^474897661 is an apocalyptic number.

It is an amenable number.

474897661 is a deficient number, since it is larger than the sum of its proper divisors (77534369).

474897661 is an equidigital number, since it uses as much as digits as its factorization.

474897661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9691803 (or 9691796 counting only the distinct ones).

The product of its digits is 2032128, while the sum is 52.

The square root of 474897661 is about 21792.1467735512. The cubic root of 474897661 is about 780.1893365703.

The spelling of 474897661 in words is "four hundred seventy-four million, eight hundred ninety-seven thousand, six hundred sixty-one".