74063531 has 4 divisors (see below), whose sum is σ = 74084472. Its totient is φ = 74042592.

The previous prime is 74063513. The next prime is 74063533. The reversal of 74063531 is 13536047.

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 74063531 - 2²² = 69869227 is a prime.

It is a super-2 number, since 2×74063531² = 10970813248375922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 74063494 and 74063503.

It is not an unprimeable number, because it can be changed into a prime (74063533) 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, 3710 + ... + 12723.

It is an arithmetic number, because the mean of its divisors is an integer number (18521118).

Almost surely, 2^74063531 is an apocalyptic number.

74063531 is a deficient number, since it is larger than the sum of its proper divisors (20941).

74063531 is a wasteful number, since it uses less digits than its factorization.

74063531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20940.

The product of its (nonzero) digits is 7560, while the sum is 29.

The square root of 74063531 is about 8606.0171391881. The cubic root of 74063531 is about 419.9537571915.

Adding to 74063531 its reverse (13536047), we get a palindrome (87599578).

The spelling of 74063531 in words is "seventy-four million, sixty-three thousand, five hundred thirty-one".