70674581 has 4 divisors (see below), whose sum is σ = 70730700. Its totient is φ = 70618464.

The previous prime is 70674563. The next prime is 70674587. The reversal of 70674581 is 18547607.

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

It can be written as a sum of positive squares in 2 ways, for example, as 35164900 + 35509681 = 5930^2 + 5959^2 .

It is a cyclic number.

It is not a de Polignac number, because 70674581 - 2⁶ = 70674517 is a prime.

It is a super-2 number, since 2×70674581² = 9989792799051122, 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 (70674587) 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, 26126 + ... + 28703.

It is an arithmetic number, because the mean of its divisors is an integer number (17682675).

Almost surely, 2^70674581 is an apocalyptic number.

It is an amenable number.

70674581 is a deficient number, since it is larger than the sum of its proper divisors (56119).

70674581 is a wasteful number, since it uses less digits than its factorization.

70674581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56118.

The product of its (nonzero) digits is 47040, while the sum is 38.

The square root of 70674581 is about 8406.8175310280. The cubic root of 70674581 is about 413.4481764794.

The spelling of 70674581 in words is "seventy million, six hundred seventy-four thousand, five hundred eighty-one".