80963651 has 4 divisors (see below), whose sum is σ = 81374832. Its totient is φ = 80552472.

The previous prime is 80963647. The next prime is 80963677. The reversal of 80963651 is 15636908.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 80963651 - 2² = 80963647 is a prime.

It is a super-2 number, since 2×80963651² = 13110225566499602, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80963681) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 205295 + ... + 205688.

It is an arithmetic number, because the mean of its divisors is an integer number (20343708).

Almost surely, 2^80963651 is an apocalyptic number.

80963651 is a deficient number, since it is larger than the sum of its proper divisors (411181).

80963651 is a wasteful number, since it uses less digits than its factorization.

80963651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 411180.

The product of its (nonzero) digits is 38880, while the sum is 38.

The square root of 80963651 is about 8997.9803845085. The cubic root of 80963651 is about 432.6101400139.

The spelling of 80963651 in words is "eighty million, nine hundred sixty-three thousand, six hundred fifty-one".