71622861 has 16 divisors (see below), whose sum is σ = 98481408. Its totient is φ = 46267200.

The previous prime is 71622847. The next prime is 71622931. The reversal of 71622861 is 16822617.

It is not a de Polignac number, because 71622861 - 2⁵ = 71622829 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71622361) 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, 28891 + ... + 31271.

It is an arithmetic number, because the mean of its divisors is an integer number (6155088).

Almost surely, 2^71622861 is an apocalyptic number.

It is an amenable number.

71622861 is a deficient number, since it is larger than the sum of its proper divisors (26858547).

71622861 is a wasteful number, since it uses less digits than its factorization.

71622861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2692.

The product of its digits is 8064, while the sum is 33.

The square root of 71622861 is about 8463.0290676566. The cubic root of 71622861 is about 415.2891216038.

The spelling of 71622861 in words is "seventy-one million, six hundred twenty-two thousand, eight hundred sixty-one".