681048487 has 8 divisors (see below), whose sum is σ = 778806656. Its totient is φ = 583406712.

The previous prime is 681048457. The next prime is 681048523. The reversal of 681048487 is 784840186.

It is a happy number.

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

It is a de Polignac number, because none of the positive numbers 2^k-681048487 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (681048457) 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, 16173 + ... + 40294.

It is an arithmetic number, because the mean of its divisors is an integer number (97350832).

Almost surely, 2^681048487 is an apocalyptic number.

681048487 is a deficient number, since it is larger than the sum of its proper divisors (97758169).

681048487 is a wasteful number, since it uses less digits than its factorization.

681048487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58197.

The product of its (nonzero) digits is 344064, while the sum is 46.

The square root of 681048487 is about 26096.9056978026. The cubic root of 681048487 is about 879.8176649606.

The spelling of 681048487 in words is "six hundred eighty-one million, forty-eight thousand, four hundred eighty-seven".