669379763 has 16 divisors (see below), whose sum is σ = 727765920. Its totient is φ = 615652128.

The previous prime is 669379759. The next prime is 669379783. The reversal of 669379763 is 367973966.

It is a happy number.

It is not a de Polignac number, because 669379763 - 2² = 669379759 is a prime.

It is a super-2 number, since 2×669379763² = 896138534227872338, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 669379699 and 669379708.

It is not an unprimeable number, because it can be changed into a prime (669379703) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1201481 + ... + 1202037.

It is an arithmetic number, because the mean of its divisors is an integer number (45485370).

Almost surely, 2^669379763 is an apocalyptic number.

669379763 is a deficient number, since it is larger than the sum of its proper divisors (58386157).

669379763 is an equidigital number, since it uses as much as digits as its factorization.

669379763 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1143 (or 1117 counting only the distinct ones).

The product of its digits is 7715736, while the sum is 56.

The square root of 669379763 is about 25872.3745141415. The cubic root of 669379763 is about 874.7639147561.

The spelling of 669379763 in words is "six hundred sixty-nine million, three hundred seventy-nine thousand, seven hundred sixty-three".