74252686 has 4 divisors (see below), whose sum is σ = 111379032. Its totient is φ = 37126342.

The previous prime is 74252669. The next prime is 74252687. The reversal of 74252686 is 68625247.

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

It is a super-2 number, since 2×74252686² = 11026922756429192, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74252687) 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 as a sum of consecutive naturals, namely, 18563170 + ... + 18563173.

It is an arithmetic number, because the mean of its divisors is an integer number (27844758).

Almost surely, 2^74252686 is an apocalyptic number.

74252686 is a deficient number, since it is larger than the sum of its proper divisors (37126346).

74252686 is a wasteful number, since it uses less digits than its factorization.

74252686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37126345.

The product of its digits is 161280, while the sum is 40.

The square root of 74252686 is about 8616.9998259255. Note that the first 3 decimals coincide. The cubic root of 74252686 is about 420.3109677376.

The spelling of 74252686 in words is "seventy-four million, two hundred fifty-two thousand, six hundred eighty-six".