681214973 has 8 divisors (see below), whose sum is σ = 724033728. Its totient is φ = 638701504.

The previous prime is 681214957. The next prime is 681215021. The reversal of 681214973 is 379412186.

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 681214973 - 2⁴ = 681214957 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 681214973.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (681214913) 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, 71711 + ... + 80652.

It is an arithmetic number, because the mean of its divisors is an integer number (90504216).

Almost surely, 2^681214973 is an apocalyptic number.

It is an amenable number.

681214973 is a deficient number, since it is larger than the sum of its proper divisors (42818755).

681214973 is a wasteful number, since it uses less digits than its factorization.

681214973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152643.

The product of its digits is 72576, while the sum is 41.

The square root of 681214973 is about 26100.0952680254. The cubic root of 681214973 is about 879.8893511878.

The spelling of 681214973 in words is "six hundred eighty-one million, two hundred fourteen thousand, nine hundred seventy-three".