671029730 has 32 divisors (see below), whose sum is σ = 1385427456. Its totient is φ = 229230144.

The previous prime is 671029717. The next prime is 671029741. The reversal of 671029730 is 37920176.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2087 + ... + 36693.

It is an arithmetic number, because the mean of its divisors is an integer number (43294608).

Almost surely, 2^671029730 is an apocalyptic number.

671029730 is an abundant number, since it is smaller than the sum of its proper divisors (714397726).

671029730 is a wasteful number, since it uses less digits than its factorization.

671029730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34898.

The product of its (nonzero) digits is 15876, while the sum is 35.

The square root of 671029730 is about 25904.2415445811. The cubic root of 671029730 is about 875.4820657942.

The spelling of 671029730 in words is "six hundred seventy-one million, twenty-nine thousand, seven hundred thirty".