669070272 has 112 divisors (see below), whose sum is σ = 1968146432. Its totient is φ = 199203840.

The previous prime is 669070249. The next prime is 669070277. The reversal of 669070272 is 272070966.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a self number, because there is not a number n which added to its sum of digits gives 669070272.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (669070277) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 73053 + ... + 81699.

It is an arithmetic number, because the mean of its divisors is an integer number (17572736).

Almost surely, 2^669070272 is an apocalyptic number.

669070272 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 669070272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (984073216).

669070272 is an abundant number, since it is smaller than the sum of its proper divisors (1299076160).

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

669070272 is a wasteful number, since it uses less digits than its factorization.

669070272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8706 (or 8696 counting only the distinct ones).

The product of its (nonzero) digits is 63504, while the sum is 39.

The square root of 669070272 is about 25866.3927133259. The cubic root of 669070272 is about 874.6290768514.

The spelling of 669070272 in words is "six hundred sixty-nine million, seventy thousand, two hundred seventy-two".