74670487 has 4 divisors (see below), whose sum is σ = 75722256. Its totient is φ = 73618720.

The previous prime is 74670469. The next prime is 74670493. The reversal of 74670487 is 78407647.

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 74670487 - 2⁷ = 74670359 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 (74670457) 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, 525778 + ... + 525919.

It is an arithmetic number, because the mean of its divisors is an integer number (18930564).

Almost surely, 2^74670487 is an apocalyptic number.

74670487 is a deficient number, since it is larger than the sum of its proper divisors (1051769).

74670487 is a wasteful number, since it uses less digits than its factorization.

74670487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1051768.

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

The square root of 74670487 is about 8641.2086538863. The cubic root of 74670487 is about 421.0978214472.

It can be divided in two parts, 74670 and 487, that added together give a palindrome (75157).

The spelling of 74670487 in words is "seventy-four million, six hundred seventy thousand, four hundred eighty-seven".