407008685 has 8 divisors (see below), whose sum is σ = 488518776. Its totient is φ = 325534720.

The previous prime is 407008669. The next prime is 407008691. The reversal of 407008685 is 586800704.

It can be written as a sum of positive squares in 4 ways, for example, as 29833444 + 377175241 = 5462^2 + 19421^2 .

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

It is not a de Polignac number, because 407008685 - 2⁴ = 407008669 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38717 + ... + 48093.

It is an arithmetic number, because the mean of its divisors is an integer number (61064847).

Almost surely, 2^407008685 is an apocalyptic number.

It is an amenable number.

407008685 is a deficient number, since it is larger than the sum of its proper divisors (81510091).

407008685 is an equidigital number, since it uses as much as digits as its factorization.

407008685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18063.

The product of its (nonzero) digits is 53760, while the sum is 38.

The square root of 407008685 is about 20174.4562504173. The cubic root of 407008685 is about 741.0847768195.

The spelling of 407008685 in words is "four hundred seven million, eight thousand, six hundred eighty-five".