80644699 has 2 divisors, whose sum is σ = 80644700. Its totient is φ = 80644698.

The previous prime is 80644673. The next prime is 80644703. The reversal of 80644699 is 99644608.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 80644699 - 2⁵ = 80644667 is a prime.

It is not a weakly prime, because it can be changed into another prime (80644649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40322349 + 40322350.

It is an arithmetic number, because the mean of its divisors is an integer number (40322350).

Almost surely, 2^80644699 is an apocalyptic number.

80644699 is a deficient number, since it is larger than the sum of its proper divisors (1).

80644699 is an equidigital number, since it uses as much as digits as its factorization.

80644699 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 373248, while the sum is 46.

The square root of 80644699 is about 8980.2393620660. The cubic root of 80644699 is about 432.0413108500.

The spelling of 80644699 in words is "eighty million, six hundred forty-four thousand, six hundred ninety-nine".