73878347 has 4 divisors (see below), whose sum is σ = 74556240. Its totient is φ = 73200456.

The previous prime is 73878319. The next prime is 73878353. The reversal of 73878347 is 74387837.

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 73878347 - 2²⁴ = 57101131 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (73878397) 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, 338783 + ... + 339000.

It is an arithmetic number, because the mean of its divisors is an integer number (18639060).

Almost surely, 2^73878347 is an apocalyptic number.

73878347 is a deficient number, since it is larger than the sum of its proper divisors (677893).

73878347 is a wasteful number, since it uses less digits than its factorization.

73878347 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 677892.

The product of its digits is 790272, while the sum is 47.

The square root of 73878347 is about 8595.2514215699. The cubic root of 73878347 is about 419.6034560298.

The spelling of 73878347 in words is "seventy-three million, eight hundred seventy-eight thousand, three hundred forty-seven".