671025534 has 16 divisors (see below), whose sum is σ = 1349550720. Its totient is φ = 222425240.

The previous prime is 671025503. The next prime is 671025541. The reversal of 671025534 is 435520176.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 671025495 and 671025504.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 311322 + ... + 313469.

It is an arithmetic number, because the mean of its divisors is an integer number (84346920).

Almost surely, 2^671025534 is an apocalyptic number.

671025534 is an abundant number, since it is smaller than the sum of its proper divisors (678525186).

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

671025534 is a wasteful number, since it uses less digits than its factorization.

671025534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 624975.

The product of its (nonzero) digits is 25200, while the sum is 33.

The square root of 671025534 is about 25904.1605538570. The cubic root of 671025534 is about 875.4802409717.

The spelling of 671025534 in words is "six hundred seventy-one million, twenty-five thousand, five hundred thirty-four".