681507410 has 16 divisors (see below), whose sum is σ = 1266285312. Its totient is φ = 263809200.

The previous prime is 681507397. The next prime is 681507427. The reversal of 681507410 is 14705186.

It is a happy 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, 1098896 + ... + 1099515.

It is an arithmetic number, because the mean of its divisors is an integer number (79142832).

Almost surely, 2^681507410 is an apocalyptic number.

681507410 is a deficient number, since it is larger than the sum of its proper divisors (584777902).

681507410 is a wasteful number, since it uses less digits than its factorization.

681507410 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2198449.

The product of its (nonzero) digits is 6720, while the sum is 32.

The square root of 681507410 is about 26105.6968878442. The cubic root of 681507410 is about 880.0152416437.

The spelling of 681507410 in words is "six hundred eighty-one million, five hundred seven thousand, four hundred ten".