80969216 has 20 divisors (see below), whose sum is σ = 161781312. Its totient is φ = 40484352.

The previous prime is 80969201. The next prime is 80969261. The reversal of 80969216 is 61296908.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78560 + ... + 79583.

Almost surely, 2^80969216 is an apocalyptic number.

It is an amenable number.

80969216 is a deficient number, since it is larger than the sum of its proper divisors (80812096).

80969216 is an equidigital number, since it uses as much as digits as its factorization.

80969216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158161 (or 158145 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 41.

The square root of 80969216 is about 8998.2896152547. The cubic root of 80969216 is about 432.6200515410.

Subtracting from 80969216 its sum of digits (41), we obtain a triangular number (80969175 = T₁₂₇₂₅).

The spelling of 80969216 in words is "eighty million, nine hundred sixty-nine thousand, two hundred sixteen".