74921505 has 16 divisors (see below), whose sum is σ = 120216960. Its totient is φ = 39843968.

The previous prime is 74921461. The next prime is 74921537. The reversal of 74921505 is 50512947.

It is a cyclic number.

It is not a de Polignac number, because 74921505 - 2¹⁴ = 74905121 is a prime.

It is a super-2 number, since 2×74921505² = 11226463822930050, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1572 + ... + 12341.

It is an arithmetic number, because the mean of its divisors is an integer number (7513560).

Almost surely, 2^74921505 is an apocalyptic number.

It is an amenable number.

74921505 is a deficient number, since it is larger than the sum of its proper divisors (45295455).

74921505 is a wasteful number, since it uses less digits than its factorization.

74921505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14280.

The product of its (nonzero) digits is 12600, while the sum is 33.

The square root of 74921505 is about 8655.7209405110. The cubic root of 74921505 is about 421.5691585235.

The spelling of 74921505 in words is "seventy-four million, nine hundred twenty-one thousand, five hundred five".