70040783 has 4 divisors (see below), whose sum is σ = 73727160. Its totient is φ = 66354408.

The previous prime is 70040759. The next prime is 70040791. The reversal of 70040783 is 38704007.

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

It is a cyclic number.

It is not a de Polignac number, because 70040783 - 2²⁶ = 2931919 is a prime.

It is a super-2 number, since 2×70040783² = 9811422566506178, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70040743) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1843160 + ... + 1843197.

It is an arithmetic number, because the mean of its divisors is an integer number (18431790).

Almost surely, 2^70040783 is an apocalyptic number.

70040783 is a deficient number, since it is larger than the sum of its proper divisors (3686377).

70040783 is a wasteful number, since it uses less digits than its factorization.

70040783 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3686376.

The product of its (nonzero) digits is 4704, while the sum is 29.

The square root of 70040783 is about 8369.0371608686. The cubic root of 70040783 is about 412.2085517653.

The spelling of 70040783 in words is "seventy million, forty thousand, seven hundred eighty-three".