670419906 has 16 divisors (see below), whose sum is σ = 1443981504. Its totient is φ = 206283024.

The previous prime is 670419899. The next prime is 670419907. The reversal of 670419906 is 609914076.

It is a super-2 number, since 2×670419906² = 898925700722097672, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (670419907) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4297486 + ... + 4297641.

It is an arithmetic number, because the mean of its divisors is an integer number (90248844).

Almost surely, 2^670419906 is an apocalyptic number.

670419906 is an abundant number, since it is smaller than the sum of its proper divisors (773561598).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

670419906 is a wasteful number, since it uses less digits than its factorization.

670419906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8595145.

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

The square root of 670419906 is about 25892.4681326443. The cubic root of 670419906 is about 875.2167761137.

The spelling of 670419906 in words is "six hundred seventy million, four hundred nineteen thousand, nine hundred six".