70632191 has 4 divisors (see below), whose sum is σ = 80722512. Its totient is φ = 60541872.

The previous prime is 70632181. The next prime is 70632203. The reversal of 70632191 is 19123607.

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

It is a cyclic number.

It is not a de Polignac number, because 70632191 - 2¹⁰ = 70631167 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 (70632151) 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, 5045150 + ... + 5045163.

It is an arithmetic number, because the mean of its divisors is an integer number (20180628).

Almost surely, 2^70632191 is an apocalyptic number.

70632191 is a deficient number, since it is larger than the sum of its proper divisors (10090321).

70632191 is a wasteful number, since it uses less digits than its factorization.

70632191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10090320.

The product of its (nonzero) digits is 2268, while the sum is 29.

The square root of 70632191 is about 8404.2959847925. The cubic root of 70632191 is about 413.3654990721.

Adding to 70632191 its reverse (19123607), we get a palindrome (89755798).

The spelling of 70632191 in words is "seventy million, six hundred thirty-two thousand, one hundred ninety-one".