71940621 has 8 divisors (see below), whose sum is σ = 95967040. Its totient is φ = 47937312.

The previous prime is 71940611. The next prime is 71940629. The reversal of 71940621 is 12604917.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 71940621 - 2¹³ = 71932429 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 (71940629) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3720 + ... + 12558.

It is an arithmetic number, because the mean of its divisors is an integer number (11995880).

Almost surely, 2^71940621 is an apocalyptic number.

It is an amenable number.

71940621 is a deficient number, since it is larger than the sum of its proper divisors (24026419).

71940621 is a wasteful number, since it uses less digits than its factorization.

71940621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11555.

The product of its (nonzero) digits is 3024, while the sum is 30.

The square root of 71940621 is about 8481.7817114095. The cubic root of 71940621 is about 415.9023689927.

The spelling of 71940621 in words is "seventy-one million, nine hundred forty thousand, six hundred twenty-one".