78748633 has 4 divisors (see below), whose sum is σ = 78899728. Its totient is φ = 78597540.

The previous prime is 78748627. The next prime is 78748639. The reversal of 78748633 is 33684787.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 33684787 = 3631 ⋅9277.

It is an interprime number because it is at equal distance from previous prime (78748627) and next prime (78748639).

It is a cyclic number.

It is not a de Polignac number, because 78748633 - 2²¹ = 76651481 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78748639) 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, 74763 + ... + 75808.

It is an arithmetic number, because the mean of its divisors is an integer number (19724932).

Almost surely, 2^78748633 is an apocalyptic number.

It is an amenable number.

78748633 is a deficient number, since it is larger than the sum of its proper divisors (151095).

78748633 is a wasteful number, since it uses less digits than its factorization.

78748633 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151094.

The product of its digits is 677376, while the sum is 46.

The square root of 78748633 is about 8874.0426525908. The cubic root of 78748633 is about 428.6284639384.

The spelling of 78748633 in words is "seventy-eight million, seven hundred forty-eight thousand, six hundred thirty-three".