73878971 has 4 divisors (see below), whose sum is σ = 75450912. Its totient is φ = 72307032.

The previous prime is 73878943. The next prime is 73878977. The reversal of 73878971 is 17987837.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 17987837 = 7 ⋅2569691.

It is a cyclic number.

It is not a de Polignac number, because 73878971 - 2¹⁴ = 73862587 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (73878977) 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, 785900 + ... + 785993.

It is an arithmetic number, because the mean of its divisors is an integer number (18862728).

Almost surely, 2^73878971 is an apocalyptic number.

73878971 is a deficient number, since it is larger than the sum of its proper divisors (1571941).

73878971 is a wasteful number, since it uses less digits than its factorization.

73878971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1571940.

The product of its digits is 592704, while the sum is 50.

The square root of 73878971 is about 8595.2877206060. The cubic root of 73878971 is about 419.6046373946.

The spelling of 73878971 in words is "seventy-three million, eight hundred seventy-eight thousand, nine hundred seventy-one".