74143634 has 8 divisors (see below), whose sum is σ = 114221388. Its totient is φ = 36069840.

The previous prime is 74143631. The next prime is 74143639. The reversal of 74143634 is 43634147.

It can be written as a sum of positive squares in 2 ways, for example, as 73908409 + 235225 = 8597^2 + 485^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an alternating number because its digits alternate between odd and even.

It is a self number, because there is not a number n which added to its sum of digits gives 74143634.

It is not an unprimeable number, because it can be changed into a prime (74143631) 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, 500897 + ... + 501044.

Almost surely, 2^74143634 is an apocalyptic number.

74143634 is a gapful number since it is divisible by the number (74) formed by its first and last digit.

74143634 is a deficient number, since it is larger than the sum of its proper divisors (40077754).

74143634 is a wasteful number, since it uses less digits than its factorization.

74143634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1001980.

The product of its digits is 24192, while the sum is 32.

The square root of 74143634 is about 8610.6697765040. The cubic root of 74143634 is about 420.1051021925.

The spelling of 74143634 in words is "seventy-four million, one hundred forty-three thousand, six hundred thirty-four".