80649550 has 12 divisors (see below), whose sum is σ = 150008256. Its totient is φ = 32259800.

The previous prime is 80649463. The next prime is 80649577. The reversal of 80649550 is 5594608.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 806446 + ... + 806545.

It is an arithmetic number, because the mean of its divisors is an integer number (12500688).

Almost surely, 2^80649550 is an apocalyptic number.

80649550 is a deficient number, since it is larger than the sum of its proper divisors (69358706).

80649550 is a wasteful number, since it uses less digits than its factorization.

80649550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1613003 (or 1612998 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 37.

The square root of 80649550 is about 8980.5094510278. The cubic root of 80649550 is about 432.0499734999.

The spelling of 80649550 in words is "eighty million, six hundred forty-nine thousand, five hundred fifty".