40780585 has 8 divisors (see below), whose sum is σ = 49860360. Its totient is φ = 32008704.

The previous prime is 40780561. The next prime is 40780613. The reversal of 40780585 is 58508704.

It can be written as a sum of positive squares in 4 ways, for example, as 20602521 + 20178064 = 4539^2 + 4492^2 .

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 40780585 - 2⁹ = 40780073 is a prime.

It is a super-2 number, since 2×40780585² = 3326112225884450, which contains 22 as substring.

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, 76680 + ... + 77209.

It is an arithmetic number, because the mean of its divisors is an integer number (6232545).

Almost surely, 2^40780585 is an apocalyptic number.

It is an amenable number.

40780585 is a deficient number, since it is larger than the sum of its proper divisors (9079775).

40780585 is a wasteful number, since it uses less digits than its factorization.

40780585 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153947.

The product of its (nonzero) digits is 44800, while the sum is 37.

The square root of 40780585 is about 6385.9678201507. The cubic root of 40780585 is about 344.2055091880.

It can be divided in two parts, 40 and 780585, that added together give a triangular number (780625 = T₁₂₄₉).

The spelling of 40780585 in words is "forty million, seven hundred eighty thousand, five hundred eighty-five".