74066761 has 4 divisors (see below), whose sum is σ = 74107012. Its totient is φ = 74026512.

The previous prime is 74066723. The next prime is 74066777. The reversal of 74066761 is 16766047.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 16766047 = 251 ⋅66797.

It can be written as a sum of positive squares in 2 ways, for example, as 49266361 + 24800400 = 7019^2 + 4980^2 .

It is a cyclic number.

It is not a de Polignac number, because 74066761 - 2⁹ = 74066249 is a prime.

It is a super-2 number, since 2×74066761² = 10971770170062242, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 74066761.

It is not an unprimeable number, because it can be changed into a prime (74066701) 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, 17226 + ... + 21091.

It is an arithmetic number, because the mean of its divisors is an integer number (18526753).

Almost surely, 2^74066761 is an apocalyptic number.

It is an amenable number.

74066761 is a deficient number, since it is larger than the sum of its proper divisors (40251).

74066761 is a wasteful number, since it uses less digits than its factorization.

74066761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40250.

The product of its (nonzero) digits is 42336, while the sum is 37.

The square root of 74066761 is about 8606.2047965407. The cubic root of 74066761 is about 419.9598619995.

The spelling of 74066761 in words is "seventy-four million, sixty-six thousand, seven hundred sixty-one".