681450070 has 32 divisors (see below), whose sum is σ = 1402748928. Its totient is φ = 233488608.

The previous prime is 681450047. The next prime is 681450073. The reversal of 681450070 is 70054186.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (681450073) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 186279 + ... + 189901.

It is an arithmetic number, because the mean of its divisors is an integer number (43835904).

Almost surely, 2^681450070 is an apocalyptic number.

681450070 is an abundant number, since it is smaller than the sum of its proper divisors (721298858).

681450070 is a wasteful number, since it uses less digits than its factorization.

681450070 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6324.

The product of its (nonzero) digits is 6720, while the sum is 31.

The square root of 681450070 is about 26104.5986370218. The cubic root of 681450070 is about 879.9905603326.

The spelling of 681450070 in words is "six hundred eighty-one million, four hundred fifty thousand, seventy".