70434891 has 6 divisors (see below), whose sum is σ = 101739300. Its totient is φ = 46956588.

The previous prime is 70434877. The next prime is 70434907. The reversal of 70434891 is 19843407.

It is a happy number.

It is not a de Polignac number, because 70434891 - 2⁹ = 70434379 is a prime.

It is a super-2 number, since 2×70434891² = 9922147740363762, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (70434841) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3913041 + ... + 3913058.

It is an arithmetic number, because the mean of its divisors is an integer number (16956550).

Almost surely, 2^70434891 is an apocalyptic number.

70434891 is a deficient number, since it is larger than the sum of its proper divisors (31304409).

70434891 is a wasteful number, since it uses less digits than its factorization.

70434891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7826105 (or 7826102 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 70434891 is about 8392.5497317561. The cubic root of 70434891 is about 412.9802494722.

The spelling of 70434891 in words is "seventy million, four hundred thirty-four thousand, eight hundred ninety-one".