71800379 has 4 divisors (see below), whose sum is σ = 82057584. Its totient is φ = 61543176.

The previous prime is 71800369. The next prime is 71800409. The reversal of 71800379 is 97300817.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 71800379 - 2¹⁶ = 71734843 is a prime.

It is not an unprimeable number, because it can be changed into a prime (71800369) 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, 5128592 + ... + 5128605.

It is an arithmetic number, because the mean of its divisors is an integer number (20514396).

Almost surely, 2^71800379 is an apocalyptic number.

71800379 is a deficient number, since it is larger than the sum of its proper divisors (10257205).

71800379 is a wasteful number, since it uses less digits than its factorization.

71800379 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10257204.

The product of its (nonzero) digits is 10584, while the sum is 35.

The square root of 71800379 is about 8473.5104295681. The cubic root of 71800379 is about 415.6319379926.

The spelling of 71800379 in words is "seventy-one million, eight hundred thousand, three hundred seventy-nine".