71623379 has 4 divisors (see below), whose sum is σ = 73559184. Its totient is φ = 69687576.

The previous prime is 71623367. The next prime is 71623381. The reversal of 71623379 is 97332617.

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

It is a de Polignac number, because none of the positive numbers 2^k-71623379 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71623319) 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, 967847 + ... + 967920.

It is an arithmetic number, because the mean of its divisors is an integer number (18389796).

Almost surely, 2^71623379 is an apocalyptic number.

71623379 is a deficient number, since it is larger than the sum of its proper divisors (1935805).

71623379 is a wasteful number, since it uses less digits than its factorization.

71623379 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1935804.

The product of its digits is 47628, while the sum is 38.

The square root of 71623379 is about 8463.0596713009. The cubic root of 71623379 is about 415.2901227704.

The spelling of 71623379 in words is "seventy-one million, six hundred twenty-three thousand, three hundred seventy-nine".