71623011 has 16 divisors (see below), whose sum is σ = 99084960. Its totient is φ = 45964800.

The previous prime is 71623003. The next prime is 71623021. The reversal of 71623011 is 11032617.

It is not a de Polignac number, because 71623011 - 2³ = 71623003 is a prime.

It is a super-2 number, since 2×71623011² = 10259711409412242, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (71623021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33861 + ... + 35913.

It is an arithmetic number, because the mean of its divisors is an integer number (6192810).

Almost surely, 2^71623011 is an apocalyptic number.

71623011 is a deficient number, since it is larger than the sum of its proper divisors (27461949).

71623011 is a wasteful number, since it uses less digits than its factorization.

71623011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2486.

The product of its (nonzero) digits is 252, while the sum is 21.

The square root of 71623011 is about 8463.0379297271. The cubic root of 71623011 is about 415.2894115174.

Adding to 71623011 its reverse (11032617), we get a palindrome (82655628).

The spelling of 71623011 in words is "seventy-one million, six hundred twenty-three thousand, eleven".