69901081 has 4 divisors (see below), whose sum is σ = 70024500. Its totient is φ = 69777664.

The previous prime is 69901043. The next prime is 69901109. The reversal of 69901081 is 18010996.

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 20620681 + 49280400 = 4541^2 + 7020^2 .

It is a cyclic number.

It is not a de Polignac number, because 69901081 - 2¹⁵ = 69868313 is a prime.

It is a super-2 number, since 2×69901081² = 9772322249937122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (69901681) 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, 60856 + ... + 61993.

It is an arithmetic number, because the mean of its divisors is an integer number (17506125).

Almost surely, 2^69901081 is an apocalyptic number.

It is an amenable number.

69901081 is a deficient number, since it is larger than the sum of its proper divisors (123419).

69901081 is a wasteful number, since it uses less digits than its factorization.

69901081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123418.

The product of its (nonzero) digits is 3888, while the sum is 34.

The square root of 69901081 is about 8360.6866344816. The cubic root of 69901081 is about 411.9343082651.

The spelling of 69901081 in words is "sixty-nine million, nine hundred one thousand, eighty-one".