670720434 has 16 divisors (see below), whose sum is σ = 1399764672. Its totient is φ = 213852848.

The previous prime is 670720429. The next prime is 670720483. The reversal of 670720434 is 434027076.

It is a junction number, because it is equal to n+sod(n) for n = 670720395 and 670720404.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2430009 + ... + 2430284.

It is an arithmetic number, because the mean of its divisors is an integer number (87485292).

Almost surely, 2^670720434 is an apocalyptic number.

670720434 is an abundant number, since it is smaller than the sum of its proper divisors (729044238).

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

670720434 is a wasteful number, since it uses less digits than its factorization.

670720434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4860321.

The product of its (nonzero) digits is 28224, while the sum is 33.

The square root of 670720434 is about 25898.2708689210. The cubic root of 670720434 is about 875.3475338932.

The spelling of 670720434 in words is "six hundred seventy million, seven hundred twenty thousand, four hundred thirty-four".