71822653 has 4 divisors (see below), whose sum is σ = 82083040. Its totient is φ = 61562268.

The previous prime is 71822591. The next prime is 71822659. The reversal of 71822653 is 35622817.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 35622817 = 29 ⋅1228373.

It is a cyclic number.

It is not a de Polignac number, because 71822653 - 2¹³ = 71814461 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 (71822659) 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, 5130183 + ... + 5130196.

It is an arithmetic number, because the mean of its divisors is an integer number (20520760).

Almost surely, 2^71822653 is an apocalyptic number.

It is an amenable number.

71822653 is a deficient number, since it is larger than the sum of its proper divisors (10260387).

71822653 is a wasteful number, since it uses less digits than its factorization.

71822653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10260386.

The product of its digits is 20160, while the sum is 34.

The square root of 71822653 is about 8474.8246589531. The cubic root of 71822653 is about 415.6749128291.

The spelling of 71822653 in words is "seventy-one million, eight hundred twenty-two thousand, six hundred fifty-three".