78481633 has 8 divisors (see below), whose sum is σ = 79521120. Its totient is φ = 77447040.

The previous prime is 78481607. The next prime is 78481649. The reversal of 78481633 is 33618487.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 78481633 - 2¹⁷ = 78350561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78481693) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39678 + ... + 41608.

It is an arithmetic number, because the mean of its divisors is an integer number (9940140).

Almost surely, 2^78481633 is an apocalyptic number.

It is an amenable number.

78481633 is a deficient number, since it is larger than the sum of its proper divisors (1039487).

78481633 is a wasteful number, since it uses less digits than its factorization.

78481633 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2447.

The product of its digits is 96768, while the sum is 40.

The square root of 78481633 is about 8858.9860029238. The cubic root of 78481633 is about 428.1434888067.

The spelling of 78481633 in words is "seventy-eight million, four hundred eighty-one thousand, six hundred thirty-three".