80649351 has 20 divisors (see below), whose sum is σ = 120848992. Its totient is φ = 53599968.

The previous prime is 80649347. The next prime is 80649353. The reversal of 80649351 is 15394608.

80649351 is a `hidden beast` number, since 8 + 0 + 649 + 3 + 5 + 1 = 666.

It is not a de Polignac number, because 80649351 - 2² = 80649347 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 (80649353) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 28371 + ... + 31083.

Almost surely, 2^80649351 is an apocalyptic number.

80649351 is a gapful number since it is divisible by the number (81) formed by its first and last digit.

80649351 is a deficient number, since it is larger than the sum of its proper divisors (40199641).

80649351 is a wasteful number, since it uses less digits than its factorization.

80649351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3092 (or 3083 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The square root of 80649351 is about 8980.4983714714. The cubic root of 80649351 is about 432.0496181434.

The spelling of 80649351 in words is "eighty million, six hundred forty-nine thousand, three hundred fifty-one".