7897148766 has 48 divisors (see below), whose sum is σ = 18456787440. Its totient is φ = 2425921920.

The previous prime is 7897148759. The next prime is 7897148767. The reversal of 7897148766 is 6678417987.

7897148766 is a `hidden beast` number, since 7 + 8 + 97 + 1 + 487 + 66 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7897148767) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 117586 + ... + 172106.

It is an arithmetic number, because the mean of its divisors is an integer number (384516405).

Almost surely, 2^7897148766 is an apocalyptic number.

7897148766 is an abundant number, since it is smaller than the sum of its proper divisors (10559638674).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7897148766 is a wasteful number, since it uses less digits than its factorization.

7897148766 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55161 (or 55158 counting only the distinct ones).

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

The square root of 7897148766 is about 88865.9032812923. The cubic root of 7897148766 is about 1991.3920687445.

The spelling of 7897148766 in words is "seven billion, eight hundred ninety-seven million, one hundred forty-eight thousand, seven hundred sixty-six".