681437476 has 24 divisors (see below), whose sum is σ = 1234679040. Its totient is φ = 328692000.

The previous prime is 681437461. The next prime is 681437479. The reversal of 681437476 is 674734186.

It is not an unprimeable number, because it can be changed into a prime (681437479) 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, 224811 + ... + 227821.

It is an arithmetic number, because the mean of its divisors is an integer number (51444960).

Almost surely, 2^681437476 is an apocalyptic number.

It is an amenable number.

681437476 is a deficient number, since it is larger than the sum of its proper divisors (553241564).

681437476 is a wasteful number, since it uses less digits than its factorization.

681437476 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4995 (or 4993 counting only the distinct ones).

The product of its digits is 677376, while the sum is 46.

The square root of 681437476 is about 26104.3574140411. The cubic root of 681437476 is about 879.9851392119.

The spelling of 681437476 in words is "six hundred eighty-one million, four hundred thirty-seven thousand, four hundred seventy-six".