74915 has 4 divisors (see below), whose sum is σ = 89904. Its totient is φ = 59928.

The previous prime is 74903. The next prime is 74923. The reversal of 74915 is 51947.

74915 is nontrivially palindromic in base 11.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-74915 is a prime.

It is a super-2 number, since 2×74915² = 11224514450, which contains 22 as substring.

It is a Duffinian number.

It is a plaindrome in base 6 and base 9.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7487 + ... + 7496.

It is an arithmetic number, because the mean of its divisors is an integer number (22476).

2⁷⁴⁹¹⁵ is an apocalyptic number.

74915 is a deficient number, since it is larger than the sum of its proper divisors (14989).

74915 is a wasteful number, since it uses less digits than its factorization.

74915 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14988.

The product of its digits is 1260, while the sum is 26.

The square root of 74915 is about 273.7060466997. The cubic root of 74915 is about 42.1556957368.

It can be divided in two parts, 74 and 915, that added together give a palindrome (989).

The spelling of 74915 in words is "seventy-four thousand, nine hundred fifteen".