80633745 has 32 divisors (see below), whose sum is σ = 149587200. Its totient is φ = 41133312.

The previous prime is 80633741. The next prime is 80633783. The reversal of 80633745 is 54733608.

It is a happy number.

It is not a de Polignac number, because 80633745 - 2² = 80633741 is a prime.

It is not an unprimeable number, because it can be changed into a prime (80633741) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9880 + ... + 16089.

It is an arithmetic number, because the mean of its divisors is an integer number (4674600).

Almost surely, 2^80633745 is an apocalyptic number.

It is an amenable number.

80633745 is a deficient number, since it is larger than the sum of its proper divisors (68953455).

80633745 is a wasteful number, since it uses less digits than its factorization.

80633745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26006 (or 26000 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 36.

The square root of 80633745 is about 8979.6294466977. The cubic root of 80633745 is about 432.0217485193.

The spelling of 80633745 in words is "eighty million, six hundred thirty-three thousand, seven hundred forty-five".