766400055 has 32 divisors (see below), whose sum is σ = 1325683200. Its totient is φ = 376762752.

The previous prime is 766400039. The next prime is 766400101. The reversal of 766400055 is 550004667.

It is not a de Polignac number, because 766400055 - 2⁴ = 766400039 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 766399989 and 766400025.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 25795 + ... + 46884.

It is an arithmetic number, because the mean of its divisors is an integer number (41427600).

Almost surely, 2^766400055 is an apocalyptic number.

766400055 is a deficient number, since it is larger than the sum of its proper divisors (559283145).

766400055 is a wasteful number, since it uses less digits than its factorization.

766400055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72743.

The product of its (nonzero) digits is 25200, while the sum is 33.

The square root of 766400055 is about 27683.9313501533. The cubic root of 766400055 is about 915.1350214315.

The spelling of 766400055 in words is "seven hundred sixty-six million, four hundred thousand, fifty-five".