80372645 has 8 divisors (see below), whose sum is σ = 98267256. Its totient is φ = 63084736.

The previous prime is 80372629. The next prime is 80372647. The reversal of 80372645 is 54627308.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 17297281 + 63075364 = 4159^2 + 7942^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 80372645 - 2⁴ = 80372629 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80372647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 151382 + ... + 151911.

It is an arithmetic number, because the mean of its divisors is an integer number (12283407).

Almost surely, 2^80372645 is an apocalyptic number.

It is an amenable number.

80372645 is a deficient number, since it is larger than the sum of its proper divisors (17894611).

80372645 is a wasteful number, since it uses less digits than its factorization.

80372645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 303351.

The product of its (nonzero) digits is 40320, while the sum is 35.

The square root of 80372645 is about 8965.0791965269. The cubic root of 80372645 is about 431.5549346500.

It can be divided in two parts, 80 and 372645, that multiplied together give a square (29811600 = 5460²).

The spelling of 80372645 in words is "eighty million, three hundred seventy-two thousand, six hundred forty-five".