40578685 has 16 divisors (see below), whose sum is σ = 57571200. Its totient is φ = 26865216.

The previous prime is 40578667. The next prime is 40578697. The reversal of 40578685 is 58687504.

It is not a de Polignac number, because 40578685 - 2⁵ = 40578653 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18975 + ... + 21004.

It is an arithmetic number, because the mean of its divisors is an integer number (3598200).

Almost surely, 2^40578685 is an apocalyptic number.

It is an amenable number.

40578685 is a deficient number, since it is larger than the sum of its proper divisors (16992515).

40578685 is a wasteful number, since it uses less digits than its factorization.

40578685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40020.

The product of its (nonzero) digits is 268800, while the sum is 43.

The square root of 40578685 is about 6370.1401083493. The cubic root of 40578685 is about 343.6365284977.

The spelling of 40578685 in words is "forty million, five hundred seventy-eight thousand, six hundred eighty-five".