681420082 has 32 divisors (see below), whose sum is σ = 1203035904. Its totient is φ = 283392000.

The previous prime is 681420073. The next prime is 681420107. The reversal of 681420082 is 280024186.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 107707 + ... + 113857.

It is an arithmetic number, because the mean of its divisors is an integer number (37594872).

Almost surely, 2^681420082 is an apocalyptic number.

681420082 is a deficient number, since it is larger than the sum of its proper divisors (521615822).

681420082 is a wasteful number, since it uses less digits than its factorization.

681420082 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6394.

The product of its (nonzero) digits is 6144, while the sum is 31.

The square root of 681420082 is about 26104.0242491460. The cubic root of 681420082 is about 879.9776518085.

It can be divided in two parts, 6814 and 20082, that added together give a square (26896 = 164²).

The spelling of 681420082 in words is "six hundred eighty-one million, four hundred twenty thousand, eighty-two".