7476887961 has 81 divisors (see below), whose sum is σ = 12007364733. Its totient is φ = 4482552960.

The previous prime is 7476887959. The next prime is 7476887969. The reversal of 7476887961 is 1697886747.

The square root of 7476887961 is 86469.

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

It can be written as a sum of positive squares in 4 ways, for example, as 88454025 + 7388433936 = 9405^2 + 85956^2 .

It is not a de Polignac number, because 7476887961 - 2¹ = 7476887959 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (7476887969) by changing a digit.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 182363101 + ... + 182363141.

Almost surely, 2^7476887961 is an apocalyptic number.

7476887961 is the 86469-th square number.

7476887961 is the 43235-th centered octagonal number.

It is an amenable number.

7476887961 is a deficient number, since it is larger than the sum of its proper divisors (4530476772).

7476887961 is a wasteful number, since it uses less digits than its factorization.

7476887961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200 (or 100 counting only the distinct ones).

The product of its digits is 28449792, while the sum is 63.

The cubic root of 7476887961 is about 1955.4210722545.

The spelling of 7476887961 in words is "seven billion, four hundred seventy-six million, eight hundred eighty-seven thousand, nine hundred sixty-one".