40785634 has 4 divisors (see below), whose sum is σ = 61178454. Its totient is φ = 20392816.

The previous prime is 40785623. The next prime is 40785649. The reversal of 40785634 is 43658704.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 34257609 + 6528025 = 5853^2 + 2555^2 .

It is a junction number, because it is equal to n+sod(n) for n = 40785593 and 40785602.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10196407 + ... + 10196410.

Almost surely, 2^40785634 is an apocalyptic number.

40785634 is a deficient number, since it is larger than the sum of its proper divisors (20392820).

40785634 is a wasteful number, since it uses less digits than its factorization.

40785634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20392819.

The product of its (nonzero) digits is 80640, while the sum is 37.

The square root of 40785634 is about 6386.3631277903. The cubic root of 40785634 is about 344.2197138387.

The spelling of 40785634 in words is "forty million, seven hundred eighty-five thousand, six hundred thirty-four".