681401468 has 24 divisors (see below), whose sum is σ = 1332589104. Its totient is φ = 302172800.

The previous prime is 681401467. The next prime is 681401489. The reversal of 681401468 is 864104186.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (681401467) 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, 187055 + ... + 190662.

It is an arithmetic number, because the mean of its divisors is an integer number (55524546).

Almost surely, 2^681401468 is an apocalyptic number.

It is an amenable number.

681401468 is a deficient number, since it is larger than the sum of its proper divisors (651187636).

681401468 is a wasteful number, since it uses less digits than its factorization.

681401468 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 377773 (or 377771 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 38.

The square root of 681401468 is about 26103.6677116454. The cubic root of 681401468 is about 879.9696391040.

The spelling of 681401468 in words is "six hundred eighty-one million, four hundred one thousand, four hundred sixty-eight".