7661004871 has 8 divisors (see below), whose sum is σ = 8315277824. Its totient is φ = 7016012640.

The previous prime is 7661004863. The next prime is 7661004881. The reversal of 7661004871 is 1784001667.

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

It is not a de Polignac number, because 7661004871 - 2³ = 7661004863 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7661004821) 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, 2318460 + ... + 2321761.

It is an arithmetic number, because the mean of its divisors is an integer number (1039409728).

Almost surely, 2^7661004871 is an apocalyptic number.

7661004871 is a deficient number, since it is larger than the sum of its proper divisors (654272953).

7661004871 is a wasteful number, since it uses less digits than its factorization.

7661004871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4640361.

The product of its (nonzero) digits is 56448, while the sum is 40.

The square root of 7661004871 is about 87527.1664741867. The cubic root of 7661004871 is about 1971.3417187893.

The spelling of 7661004871 in words is "seven billion, six hundred sixty-one million, four thousand, eight hundred seventy-one".