766965477 has 4 divisors (see below), whose sum is σ = 1022620640. Its totient is φ = 511310316.

The previous prime is 766965473. The next prime is 766965481. The reversal of 766965477 is 774569667.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (766965473) and next prime (766965481).

It is not a de Polignac number, because 766965477 - 2² = 766965473 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 (766965473) 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, 127827577 + ... + 127827582.

It is an arithmetic number, because the mean of its divisors is an integer number (255655160).

Almost surely, 2^766965477 is an apocalyptic number.

It is an amenable number.

766965477 is a deficient number, since it is larger than the sum of its proper divisors (255655163).

766965477 is a wasteful number, since it uses less digits than its factorization.

766965477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255655162.

The product of its digits is 13335840, while the sum is 57.

The square root of 766965477 is about 27694.1415645981. The cubic root of 766965477 is about 915.3600171867.

The spelling of 766965477 in words is "seven hundred sixty-six million, nine hundred sixty-five thousand, four hundred seventy-seven".