685162481 has 8 divisors (see below), whose sum is σ = 688764384. Its totient is φ = 681568000.

The previous prime is 685162469. The next prime is 685162501. The reversal of 685162481 is 184261586.

685162481 = 55² + 56² + ... + 1271².

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

It is a cyclic number.

It is not a de Polignac number, because 685162481 - 2²² = 680968177 is a prime.

It is a super-2 number, since 2×685162481² = 938895250740150722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (685162421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 304346 + ... + 306588.

It is an arithmetic number, because the mean of its divisors is an integer number (86095548).

Almost surely, 2^685162481 is an apocalyptic number.

It is an amenable number.

685162481 is a deficient number, since it is larger than the sum of its proper divisors (3601903).

685162481 is a wasteful number, since it uses less digits than its factorization.

685162481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3711.

The product of its digits is 92160, while the sum is 41.

The square root of 685162481 is about 26175.6085125064. The cubic root of 685162481 is about 881.5856745406.

The spelling of 685162481 in words is "six hundred eighty-five million, one hundred sixty-two thousand, four hundred eighty-one".