70040693 has 4 divisors (see below), whose sum is σ = 70762860. Its totient is φ = 69318528.

The previous prime is 70040671. The next prime is 70040701. The reversal of 70040693 is 39604007.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 39604007 = 1291 ⋅30677.

It can be written as a sum of positive squares in 2 ways, for example, as 34316164 + 35724529 = 5858^2 + 5977^2 .

It is not a de Polignac number, because 70040693 - 2²⁶ = 2931829 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70040603) 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, 360938 + ... + 361131.

It is an arithmetic number, because the mean of its divisors is an integer number (17690715).

Almost surely, 2^70040693 is an apocalyptic number.

It is an amenable number.

70040693 is a deficient number, since it is larger than the sum of its proper divisors (722167).

70040693 is an equidigital number, since it uses as much as digits as its factorization.

70040693 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 722166.

The product of its (nonzero) digits is 4536, while the sum is 29.

The square root of 70040693 is about 8369.0317839043. The cubic root of 70040693 is about 412.2083752073.

The spelling of 70040693 in words is "seventy million, forty thousand, six hundred ninety-three".