671420526 has 32 divisors (see below), whose sum is σ = 1554109440. Its totient is φ = 189405216.

The previous prime is 671420513. The next prime is 671420543. The reversal of 671420526 is 625024176.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 97861 + ... + 104496.

It is an arithmetic number, because the mean of its divisors is an integer number (48565920).

Almost surely, 2^671420526 is an apocalyptic number.

671420526 is an abundant number, since it is smaller than the sum of its proper divisors (882688914).

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

671420526 is a wasteful number, since it uses less digits than its factorization.

671420526 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202448.

The product of its (nonzero) digits is 20160, while the sum is 33.

The square root of 671420526 is about 25911.7835356812. The cubic root of 671420526 is about 875.6519879689.

The spelling of 671420526 in words is "six hundred seventy-one million, four hundred twenty thousand, five hundred twenty-six".