74743655 has 8 divisors (see below), whose sum is σ = 102505632. Its totient is φ = 51252768.

The previous prime is 74743649. The next prime is 74743657. The reversal of 74743655 is 55634747.

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

It is not a de Polignac number, because 74743655 - 2¹⁴ = 74727271 is a prime.

It is a super-2 number, since 2×74743655² = 11173227925518050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74743657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1067732 + ... + 1067801.

It is an arithmetic number, because the mean of its divisors is an integer number (12813204).

Almost surely, 2^74743655 is an apocalyptic number.

74743655 is a deficient number, since it is larger than the sum of its proper divisors (27761977).

74743655 is a wasteful number, since it uses less digits than its factorization.

74743655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2135545.

The product of its digits is 352800, while the sum is 41.

The square root of 74743655 is about 8645.4412842839. The cubic root of 74743655 is about 421.2353181052.

The spelling of 74743655 in words is "seventy-four million, seven hundred forty-three thousand, six hundred fifty-five".