670772426 has 4 divisors (see below), whose sum is σ = 1006158642. Its totient is φ = 335386212.

The previous prime is 670772419. The next prime is 670772449. The reversal of 670772426 is 624277076.

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., 659205625 + 11566801 = 25675^2 + 3401^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 167693105 + ... + 167693108.

Almost surely, 2^670772426 is an apocalyptic number.

670772426 is a deficient number, since it is larger than the sum of its proper divisors (335386216).

670772426 is a wasteful number, since it uses less digits than its factorization.

670772426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 335386215.

The product of its (nonzero) digits is 197568, while the sum is 41.

The square root of 670772426 is about 25899.2746230469. The cubic root of 670772426 is about 875.3701513112.

The spelling of 670772426 in words is "six hundred seventy million, seven hundred seventy-two thousand, four hundred twenty-six".