80645323 has 4 divisors (see below), whose sum is σ = 87976728. Its totient is φ = 73313920.

The previous prime is 80645309. The next prime is 80645351. The reversal of 80645323 is 32354608.

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 80645323 - 2¹³ = 80637131 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80645423) 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, 3665686 + ... + 3665707.

It is an arithmetic number, because the mean of its divisors is an integer number (21994182).

Almost surely, 2^80645323 is an apocalyptic number.

80645323 is a deficient number, since it is larger than the sum of its proper divisors (7331405).

80645323 is a wasteful number, since it uses less digits than its factorization.

80645323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7331404.

The product of its (nonzero) digits is 17280, while the sum is 31.

The square root of 80645323 is about 8980.2741049480. The cubic root of 80645323 is about 432.0424251744.

The spelling of 80645323 in words is "eighty million, six hundred forty-five thousand, three hundred twenty-three".