80723447 has 4 divisors (see below), whose sum is σ = 92255376. Its totient is φ = 69191520.

The previous prime is 80723441. The next prime is 80723453. The reversal of 80723447 is 74432708.

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

It is an interprime number because it is at equal distance from previous prime (80723441) and next prime (80723453).

It is a cyclic number.

It is not a de Polignac number, because 80723447 - 2⁴ = 80723431 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 (80723441) 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, 5765954 + ... + 5765967.

It is an arithmetic number, because the mean of its divisors is an integer number (23063844).

Almost surely, 2^80723447 is an apocalyptic number.

80723447 is a deficient number, since it is larger than the sum of its proper divisors (11531929).

80723447 is a wasteful number, since it uses less digits than its factorization.

80723447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11531928.

The product of its (nonzero) digits is 37632, while the sum is 35.

The square root of 80723447 is about 8984.6228078868. The cubic root of 80723447 is about 432.1818917830.

The spelling of 80723447 in words is "eighty million, seven hundred twenty-three thousand, four hundred forty-seven".