74706487 has 4 divisors (see below), whose sum is σ = 74724496. Its totient is φ = 74688480.

The previous prime is 74706481. The next prime is 74706493. The reversal of 74706487 is 78460747.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (74706481) and next prime (74706493).

It is a cyclic number.

It is not a de Polignac number, because 74706487 - 2³ = 74706479 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 (74706481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 718 + ... + 12244.

It is an arithmetic number, because the mean of its divisors is an integer number (18681124).

Almost surely, 2^74706487 is an apocalyptic number.

74706487 is a deficient number, since it is larger than the sum of its proper divisors (18009).

74706487 is a wasteful number, since it uses less digits than its factorization.

74706487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18008.

The product of its (nonzero) digits is 263424, while the sum is 43.

The square root of 74706487 is about 8643.2914448143. The cubic root of 74706487 is about 421.1654835477.

The spelling of 74706487 in words is "seventy-four million, seven hundred six thousand, four hundred eighty-seven".