681492914 has 16 divisors (see below), whose sum is σ = 1038441600. Its totient is φ = 335376720.

The previous prime is 681492913. The next prime is 681492949. The reversal of 681492914 is 419294186.

It is a super-2 number, since 2×681492914² = 928865183664422792, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (681492913) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37412 + ... + 52560.

It is an arithmetic number, because the mean of its divisors is an integer number (64902600).

Almost surely, 2^681492914 is an apocalyptic number.

681492914 is a deficient number, since it is larger than the sum of its proper divisors (356948686).

681492914 is a wasteful number, since it uses less digits than its factorization.

681492914 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15505.

The product of its digits is 124416, while the sum is 44.

The square root of 681492914 is about 26105.4192458194. The cubic root of 681492914 is about 880.0090021462.

The spelling of 681492914 in words is "six hundred eighty-one million, four hundred ninety-two thousand, nine hundred fourteen".