669470901 has 16 divisors (see below), whose sum is σ = 988313088. Its totient is φ = 399682800.

The previous prime is 669470899. The next prime is 669470927. The reversal of 669470901 is 109074966.

It is not a de Polignac number, because 669470901 - 2¹ = 669470899 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (669470941) 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 15 ways as a sum of consecutive naturals, for example, 149185 + ... + 153606.

It is an arithmetic number, because the mean of its divisors is an integer number (61769568).

Almost surely, 2^669470901 is an apocalyptic number.

It is an amenable number.

669470901 is a deficient number, since it is larger than the sum of its proper divisors (318842187).

669470901 is a wasteful number, since it uses less digits than its factorization.

669470901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 302872.

The product of its (nonzero) digits is 81648, while the sum is 42.

The square root of 669470901 is about 25874.1357536827. The cubic root of 669470901 is about 874.8036135042.

The spelling of 669470901 in words is "six hundred sixty-nine million, four hundred seventy thousand, nine hundred one".