672385426 has 4 divisors (see below), whose sum is σ = 1008578142. Its totient is φ = 336192712.

The previous prime is 672385393. The next prime is 672385447. The reversal of 672385426 is 624583276.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 573363025 + 99022401 = 23945^2 + 9951^2 .

It is a super-2 number, since 2×672385426² = 904204322194402952, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 168096355 + ... + 168096358.

Almost surely, 2^672385426 is an apocalyptic number.

672385426 is a deficient number, since it is larger than the sum of its proper divisors (336192716).

672385426 is a wasteful number, since it uses less digits than its factorization.

672385426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 336192715.

The product of its digits is 483840, while the sum is 43.

The square root of 672385426 is about 25930.3957933542. The cubic root of 672385426 is about 876.0712543598.

The spelling of 672385426 in words is "six hundred seventy-two million, three hundred eighty-five thousand, four hundred twenty-six".