681052001 has 8 divisors (see below), whose sum is σ = 778738944. Its totient is φ = 583463520.

The previous prime is 681051971. The next prime is 681052003. The reversal of 681052001 is 100250186.

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

It is a cyclic number.

It is not a de Polignac number, because 681052001 - 2⁶ = 681051937 is a prime.

It is a super-2 number, since 2×681052001² = 927663656132208002, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (681052003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9140 + ... + 38021.

It is an arithmetic number, because the mean of its divisors is an integer number (97342368).

Almost surely, 2^681052001 is an apocalyptic number.

It is an amenable number.

681052001 is a deficient number, since it is larger than the sum of its proper divisors (97686943).

681052001 is a wasteful number, since it uses less digits than its factorization.

681052001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49231.

The product of its (nonzero) digits is 480, while the sum is 23.

The square root of 681052001 is about 26096.9730237053. The cubic root of 681052001 is about 879.8191781539.

The spelling of 681052001 in words is "six hundred eighty-one million, fifty-two thousand, one".