667422465 has 64 divisors (see below), whose sum is σ = 1172496384. Its totient is φ = 322818048.

The previous prime is 667422463. The next prime is 667422491. The reversal of 667422465 is 564224766.

It is not a de Polignac number, because 667422465 - 2¹ = 667422463 is a prime.

It is not an unprimeable number, because it can be changed into a prime (667422463) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1197967 + ... + 1198523.

It is an arithmetic number, because the mean of its divisors is an integer number (18320256).

Almost surely, 2^667422465 is an apocalyptic number.

It is an amenable number.

667422465 is a deficient number, since it is larger than the sum of its proper divisors (505073919).

667422465 is a wasteful number, since it uses less digits than its factorization.

667422465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 746.

The product of its digits is 483840, while the sum is 42.

The square root of 667422465 is about 25834.5208006651. The cubic root of 667422465 is about 873.9104653904.

The spelling of 667422465 in words is "six hundred sixty-seven million, four hundred twenty-two thousand, four hundred sixty-five".