669480037 has 2 divisors, whose sum is σ = 669480038. Its totient is φ = 669480036.

The previous prime is 669479989. The next prime is 669480041. The reversal of 669480037 is 730084966.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 669308641 + 171396 = 25871^2 + 414^2 .

It is a cyclic number.

It is not a de Polignac number, because 669480037 - 2²³ = 661091429 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 669479975 and 669480002.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (669480437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 334740018 + 334740019.

It is an arithmetic number, because the mean of its divisors is an integer number (334740019).

Almost surely, 2^669480037 is an apocalyptic number.

It is an amenable number.

669480037 is a deficient number, since it is larger than the sum of its proper divisors (1).

669480037 is an equidigital number, since it uses as much as digits as its factorization.

669480037 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 217728, while the sum is 43.

The square root of 669480037 is about 25874.3123000400. The cubic root of 669480037 is about 874.8075928504.

The spelling of 669480037 in words is "six hundred sixty-nine million, four hundred eighty thousand, thirty-seven".