80978463 has 12 divisors (see below), whose sum is σ = 123849648. Its totient is φ = 50809920.

The previous prime is 80978441. The next prime is 80978477. The reversal of 80978463 is 36487908.

It is a happy number.

It is not a de Polignac number, because 80978463 - 2¹³ = 80970271 is a prime.

It is a super-2 number, since 2×80978463² = 13115022939684738, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80978263) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 264483 + ... + 264788.

It is an arithmetic number, because the mean of its divisors is an integer number (10320804).

Almost surely, 2^80978463 is an apocalyptic number.

80978463 is a deficient number, since it is larger than the sum of its proper divisors (42871185).

80978463 is a wasteful number, since it uses less digits than its factorization.

80978463 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 529294 (or 529291 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The square root of 80978463 is about 8998.8034204554. The cubic root of 80978463 is about 432.6365198794.

The spelling of 80978463 in words is "eighty million, nine hundred seventy-eight thousand, four hundred sixty-three".