681400741407 has 8 divisors (see below), whose sum is σ = 908549099520. Its totient is φ = 454259772120.

The previous prime is 681400741397. The next prime is 681400741429. The reversal of 681400741407 is 704147004186.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 681400741407 - 2²³ = 681392352799 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (681400741447) 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, 1628319 + ... + 2003552.

It is an arithmetic number, because the mean of its divisors is an integer number (113568637440).

Almost surely, 2^681400741407 is an apocalyptic number.

681400741407 is a deficient number, since it is larger than the sum of its proper divisors (227148358113).

681400741407 is a wasteful number, since it uses less digits than its factorization.

681400741407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3694413.

The product of its (nonzero) digits is 150528, while the sum is 42.

The spelling of 681400741407 in words is "six hundred eighty-one billion, four hundred million, seven hundred forty-one thousand, four hundred seven".