669882470401 has 4 divisors (see below), whose sum is σ = 674318778304. Its totient is φ = 665446162500.

The previous prime is 669882470311. The next prime is 669882470431. The reversal of 669882470401 is 104074288966.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 669882470401 - 2⁹ = 669882469889 is a prime.

It is a super-2 number, since 2×669882470401² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (669882470431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2218153725 + ... + 2218154026.

It is an arithmetic number, because the mean of its divisors is an integer number (168579694576).

Almost surely, 2^669882470401 is an apocalyptic number.

It is an amenable number.

669882470401 is a deficient number, since it is larger than the sum of its proper divisors (4436307903).

669882470401 is a wasteful number, since it uses less digits than its factorization.

669882470401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4436307902.

The product of its (nonzero) digits is 4644864, while the sum is 55.

The spelling of 669882470401 in words is "six hundred sixty-nine billion, eight hundred eighty-two million, four hundred seventy thousand, four hundred one".