681073678 has 8 divisors (see below), whose sum is σ = 1027255320. Its totient is φ = 338655240.

The previous prime is 681073661. The next prime is 681073697. The reversal of 681073678 is 876370186.

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

It is a super-2 number, since 2×681073678² = 927722709728895368, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 940348 + ... + 941071.

It is an arithmetic number, because the mean of its divisors is an integer number (128406915).

Almost surely, 2^681073678 is an apocalyptic number.

681073678 is a deficient number, since it is larger than the sum of its proper divisors (346181642).

681073678 is a wasteful number, since it uses less digits than its factorization.

681073678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1881602.

The product of its (nonzero) digits is 338688, while the sum is 46.

The square root of 681073678 is about 26097.3883367666. The cubic root of 681073678 is about 879.8285125551.

The spelling of 681073678 in words is "six hundred eighty-one million, seventy-three thousand, six hundred seventy-eight".