685477901 has 8 divisors (see below), whose sum is σ = 739946880. Its totient is φ = 633064432.

The previous prime is 685477879. The next prime is 685477913. The reversal of 685477901 is 109774586.

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

It is a de Polignac number, because none of the positive numbers 2^k-685477901 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (685477931) 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 7 ways as a sum of consecutive naturals, for example, 513185 + ... + 514518.

It is an arithmetic number, because the mean of its divisors is an integer number (92493360).

Almost surely, 2^685477901 is an apocalyptic number.

It is an amenable number.

685477901 is a deficient number, since it is larger than the sum of its proper divisors (54468979).

685477901 is a wasteful number, since it uses less digits than its factorization.

685477901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1027755.

The product of its (nonzero) digits is 423360, while the sum is 47.

The square root of 685477901 is about 26181.6328940729. The cubic root of 685477901 is about 881.7209354466.

The spelling of 685477901 in words is "six hundred eighty-five million, four hundred seventy-seven thousand, nine hundred one".