74106887 has 4 divisors (see below), whose sum is σ = 75321816. Its totient is φ = 72891960.

The previous prime is 74106871. The next prime is 74106911. The reversal of 74106887 is 78860147.

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 74106887 - 2⁴ = 74106871 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74106817) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 607373 + ... + 607494.

It is an arithmetic number, because the mean of its divisors is an integer number (18830454).

Almost surely, 2^74106887 is an apocalyptic number.

74106887 is a deficient number, since it is larger than the sum of its proper divisors (1214929).

74106887 is a wasteful number, since it uses less digits than its factorization.

74106887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1214928.

The product of its (nonzero) digits is 75264, while the sum is 41.

The square root of 74106887 is about 8608.5357059142. The cubic root of 74106887 is about 420.0356866880.

The spelling of 74106887 in words is "seventy-four million, one hundred six thousand, eight hundred eighty-seven".