667296446 has 32 divisors (see below), whose sum is σ = 1050039936. Its totient is φ = 317772000.

The previous prime is 667296437. The next prime is 667296463. The reversal of 667296446 is 644692766.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 667296394 and 667296403.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 686741 + ... + 687711.

It is an arithmetic number, because the mean of its divisors is an integer number (32813748).

Almost surely, 2^667296446 is an apocalyptic number.

667296446 is a deficient number, since it is larger than the sum of its proper divisors (382743490).

667296446 is a wasteful number, since it uses less digits than its factorization.

667296446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1208.

The product of its digits is 2612736, while the sum is 50.

The square root of 667296446 is about 25832.0817202176. The cubic root of 667296446 is about 873.8554596228.

The spelling of 667296446 in words is "six hundred sixty-seven million, two hundred ninety-six thousand, four hundred forty-six".