70349881 has 16 divisors (see below), whose sum is σ = 84149248. Its totient is φ = 57542400.

The previous prime is 70349879. The next prime is 70349899. The reversal of 70349881 is 18894307.

It is a cyclic number.

It is not a de Polignac number, because 70349881 - 2¹ = 70349879 is a prime.

It is a super-2 number, since 2×70349881² = 9898211513428322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70319881) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13621 + ... + 18061.

It is an arithmetic number, because the mean of its divisors is an integer number (5259328).

Almost surely, 2^70349881 is an apocalyptic number.

It is an amenable number.

70349881 is a deficient number, since it is larger than the sum of its proper divisors (13799367).

70349881 is a wasteful number, since it uses less digits than its factorization.

70349881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4552.

The product of its (nonzero) digits is 48384, while the sum is 40.

The square root of 70349881 is about 8387.4835916382. The cubic root of 70349881 is about 412.8140364677.

The spelling of 70349881 in words is "seventy million, three hundred forty-nine thousand, eight hundred eighty-one".