76641263 has 4 divisors (see below), whose sum is σ = 76669320. Its totient is φ = 76613208.

The previous prime is 76641251. The next prime is 76641281. The reversal of 76641263 is 36214667.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 76641263 - 2⁶ = 76641199 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 (76641203) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9428 + ... + 15561.

It is an arithmetic number, because the mean of its divisors is an integer number (19167330).

Almost surely, 2^76641263 is an apocalyptic number.

76641263 is a deficient number, since it is larger than the sum of its proper divisors (28057).

76641263 is a wasteful number, since it uses less digits than its factorization.

76641263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28056.

The product of its digits is 36288, while the sum is 35.

The square root of 76641263 is about 8754.4995859272. The cubic root of 76641263 is about 424.7703728408.

The spelling of 76641263 in words is "seventy-six million, six hundred forty-one thousand, two hundred sixty-three".