70590409 has 4 divisors (see below), whose sum is σ = 74742804. Its totient is φ = 66438016.

The previous prime is 70590407. The next prime is 70590431. The reversal of 70590409 is 90409507.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 90409507 = 3581 ⋅25247.

It can be written as a sum of positive squares in 2 ways, for example, as 23736384 + 46854025 = 4872^2 + 6845^2 .

It is a cyclic number.

It is not a de Polignac number, because 70590409 - 2¹ = 70590407 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70590407) 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, 2076172 + ... + 2076205.

It is an arithmetic number, because the mean of its divisors is an integer number (18685701).

Almost surely, 2^70590409 is an apocalyptic number.

It is an amenable number.

70590409 is a deficient number, since it is larger than the sum of its proper divisors (4152395).

70590409 is a wasteful number, since it uses less digits than its factorization.

70590409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4152394.

The product of its (nonzero) digits is 11340, while the sum is 34.

The square root of 70590409 is about 8401.8098645470. The cubic root of 70590409 is about 413.2839751299.

The spelling of 70590409 in words is "seventy million, five hundred ninety thousand, four hundred nine".