80297649 has 24 divisors (see below), whose sum is σ = 120705312. Its totient is φ = 53343360.

The previous prime is 80297611. The next prime is 80297683. The reversal of 80297649 is 94679208.

It is a happy number.

It is not a de Polignac number, because 80297649 - 2¹³ = 80289457 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (80297689) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 118977 + ... + 119649.

It is an arithmetic number, because the mean of its divisors is an integer number (5029388).

Almost surely, 2^80297649 is an apocalyptic number.

It is an amenable number.

80297649 is a deficient number, since it is larger than the sum of its proper divisors (40407663).

80297649 is an equidigital number, since it uses as much as digits as its factorization.

80297649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1179 (or 1167 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 45.

The square root of 80297649 is about 8960.8955467632. The cubic root of 80297649 is about 431.4206643988.

The spelling of 80297649 in words is "eighty million, two hundred ninety-seven thousand, six hundred forty-nine".