669287430 has 48 divisors (see below), whose sum is σ = 1988741664. Its totient is φ = 152979840.

The previous prime is 669287429. The next prime is 669287431. The reversal of 669287430 is 34782966.

It is an interprime number because it is at equal distance from previous prime (669287429) and next prime (669287431).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (669287431) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 530551 + ... + 531810.

It is an arithmetic number, because the mean of its divisors is an integer number (41432118).

Almost surely, 2^669287430 is an apocalyptic number.

669287430 is an abundant number, since it is smaller than the sum of its proper divisors (1319454234).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

669287430 is a wasteful number, since it uses less digits than its factorization.

669287430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1062381 (or 1062378 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 45.

The square root of 669287430 is about 25870.5900589840. The cubic root of 669287430 is about 874.7236918040.

The spelling of 669287430 in words is "six hundred sixty-nine million, two hundred eighty-seven thousand, four hundred thirty".