669850269 has 24 divisors (see below), whose sum is σ = 1035027168. Its totient is φ = 382083840.

The previous prime is 669850267. The next prime is 669850271. The reversal of 669850269 is 962058966.

It is an interprime number because it is at equal distance from previous prime (669850267) and next prime (669850271).

It is not a de Polignac number, because 669850269 - 2¹ = 669850267 is a prime.

It is a super-2 number, since 2×669850269² = 897398765758744722, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (669850267) 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, 25582 + ... + 44655.

It is an arithmetic number, because the mean of its divisors is an integer number (43126132).

Almost surely, 2^669850269 is an apocalyptic number.

It is an amenable number.

669850269 is a deficient number, since it is larger than the sum of its proper divisors (365176899).

669850269 is a wasteful number, since it uses less digits than its factorization.

669850269 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70285 (or 70268 counting only the distinct ones).

The product of its (nonzero) digits is 1399680, while the sum is 51.

The square root of 669850269 is about 25881.4657428825. The cubic root of 669850269 is about 874.9688234878.

The spelling of 669850269 in words is "six hundred sixty-nine million, eight hundred fifty thousand, two hundred sixty-nine".