6475259961 has 15 divisors (see below), whose sum is σ = 9674001183. Its totient is φ = 4316357160.

The previous prime is 6475259953. The next prime is 6475259981. The reversal of 6475259961 is 1699525746.

The square root of 6475259961 is 80469.

It is a perfect power (a square), and thus also a powerful number.

6475259961 is a `hidden beast` number, since 6 + 47 + 5 + 2 + 599 + 6 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 4268139561 + 2207120400 = 65331^2 + 46980^2 .

It is not a de Polignac number, because 6475259961 - 2³ = 6475259953 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6475259898 and 6475259907.

It is not an unprimeable number, because it can be changed into a prime (6475259911) by changing a digit.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 719751 + ... + 728691.

Almost surely, 2^6475259961 is an apocalyptic number.

6475259961 is the 80469-th square number.

6475259961 is the 40235-th centered octagonal number.

It is an amenable number.

6475259961 is a deficient number, since it is larger than the sum of its proper divisors (3198741222).

6475259961 is an frugal number, since it uses more digits than its factorization.

6475259961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17894 (or 8944 counting only the distinct ones).

The product of its digits is 4082400, while the sum is 54.

The cubic root of 6475259961 is about 1863.8848123398.

The spelling of 6475259961 in words is "six billion, four hundred seventy-five million, two hundred fifty-nine thousand, nine hundred sixty-one".