669733377 has 16 divisors (see below), whose sum is σ = 946251072. Its totient is φ = 419893760.

The previous prime is 669733373. The next prime is 669733397. The reversal of 669733377 is 773337966.

It is a cyclic number.

It is not a de Polignac number, because 669733377 - 2² = 669733373 is a prime.

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

It is not an unprimeable number, because it can be changed into a prime (669733373) 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, 71098 + ... + 79964.

It is an arithmetic number, because the mean of its divisors is an integer number (59140692).

Almost surely, 2^669733377 is an apocalyptic number.

It is an amenable number.

669733377 is a deficient number, since it is larger than the sum of its proper divisors (276517695).

669733377 is a wasteful number, since it uses less digits than its factorization.

669733377 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10368.

The product of its digits is 3000564, while the sum is 51.

The square root of 669733377 is about 25879.2074260399. The cubic root of 669733377 is about 874.9179251452.

The spelling of 669733377 in words is "six hundred sixty-nine million, seven hundred thirty-three thousand, three hundred seventy-seven".