70408191 has 16 divisors (see below), whose sum is σ = 107439104. Its totient is φ = 40176864.

The previous prime is 70408187. The next prime is 70408207. The reversal of 70408191 is 19180407.

It is not a de Polignac number, because 70408191 - 2² = 70408187 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 (70408291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16506 + ... + 20328.

It is an arithmetic number, because the mean of its divisors is an integer number (6714944).

Almost surely, 2^70408191 is an apocalyptic number.

70408191 is a deficient number, since it is larger than the sum of its proper divisors (37030913).

70408191 is a wasteful number, since it uses less digits than its factorization.

70408191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4710.

The product of its (nonzero) digits is 2016, while the sum is 30.

The square root of 70408191 is about 8390.9588844184. The cubic root of 70408191 is about 412.9280595888.

Adding to 70408191 its reverse (19180407), we get a palindrome (89588598).

The spelling of 70408191 in words is "seventy million, four hundred eight thousand, one hundred ninety-one".