681485954 has 8 divisors (see below), whose sum is σ = 1023172608. Its totient is φ = 340428420.

The previous prime is 681485951. The next prime is 681485957. The reversal of 681485954 is 459584186.

It is an interprime number because it is at equal distance from previous prime (681485951) and next prime (681485957).

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

It is not an unprimeable number, because it can be changed into a prime (681485951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 154562 + ... + 158909.

It is an arithmetic number, because the mean of its divisors is an integer number (127896576).

Almost surely, 2^681485954 is an apocalyptic number.

681485954 is a deficient number, since it is larger than the sum of its proper divisors (341686654).

681485954 is a wasteful number, since it uses less digits than its factorization.

681485954 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 314560.

The product of its digits is 1382400, while the sum is 50.

The square root of 681485954 is about 26105.2859398245. The cubic root of 681485954 is about 880.0060063295.

The spelling of 681485954 in words is "six hundred eighty-one million, four hundred eighty-five thousand, nine hundred fifty-four".