766693445 has 54 divisors (see below), whose sum is σ = 1126887606. Its totient is φ = 499282560.

The previous prime is 766693441. The next prime is 766693463. The reversal of 766693445 is 544396667.

It can be written as a sum of positive squares in 9 ways, for example, as 572453476 + 194239969 = 23926^2 + 13937^2 .

It is not a de Polignac number, because 766693445 - 2² = 766693441 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 766693393 and 766693402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (766693441) by changing a digit.

It is a polite number, since it can be written in 53 ways as a sum of consecutive naturals, for example, 12568715 + ... + 12568775.

It is an arithmetic number, because the mean of its divisors is an integer number (20868289).

Almost surely, 2^766693445 is an apocalyptic number.

It is an amenable number.

766693445 is a deficient number, since it is larger than the sum of its proper divisors (360194161).

766693445 is an equidigital number, since it uses as much as digits as its factorization.

766693445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199 (or 102 counting only the distinct ones).

The product of its digits is 3265920, while the sum is 50.

The square root of 766693445 is about 27689.2297653799. The cubic root of 766693445 is about 915.2517825619.

The spelling of 766693445 in words is "seven hundred sixty-six million, six hundred ninety-three thousand, four hundred forty-five".