78874633 has 4 divisors (see below), whose sum is σ = 81419008. Its totient is φ = 76330260.

The previous prime is 78874597. The next prime is 78874667. The reversal of 78874633 is 33647887.

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.

It is a cyclic number.

It is not a de Polignac number, because 78874633 - 2¹³ = 78866441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78874933) 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, 1272141 + ... + 1272202.

It is an arithmetic number, because the mean of its divisors is an integer number (20354752).

Almost surely, 2^78874633 is an apocalyptic number.

It is an amenable number.

78874633 is a deficient number, since it is larger than the sum of its proper divisors (2544375).

78874633 is a wasteful number, since it uses less digits than its factorization.

78874633 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2544374.

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

The square root of 78874633 is about 8881.1391724260. The cubic root of 78874633 is about 428.8569479371.

It can be divided in two parts, 78874 and 633, that added together give a cube (79507 = 43³).

The spelling of 78874633 in words is "seventy-eight million, eight hundred seventy-four thousand, six hundred thirty-three".