80897783 has 2 divisors, whose sum is σ = 80897784. Its totient is φ = 80897782.

The previous prime is 80897779. The next prime is 80897809. The reversal of 80897783 is 38779808.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 80897783 - 2² = 80897779 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80897723) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40448891 + 40448892.

It is an arithmetic number, because the mean of its divisors is an integer number (40448892).

Almost surely, 2^80897783 is an apocalyptic number.

80897783 is a deficient number, since it is larger than the sum of its proper divisors (1).

80897783 is an equidigital number, since it uses as much as digits as its factorization.

80897783 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 677376, while the sum is 50.

The square root of 80897783 is about 8994.3194850972. The cubic root of 80897783 is about 432.4927914867.

The spelling of 80897783 in words is "eighty million, eight hundred ninety-seven thousand, seven hundred eighty-three".