74989261 has 4 divisors (see below), whose sum is σ = 79400412. Its totient is φ = 70578112.

The previous prime is 74989237. The next prime is 74989267. The reversal of 74989261 is 16298947.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 16298947 = 7 ⋅2328421.

It can be written as a sum of positive squares in 2 ways, for example, as 42328036 + 32661225 = 6506^2 + 5715^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-74989261 is a prime.

It is a super-2 number, since 2×74989261² = 11246778530652242, 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 (74989267) 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, 2205550 + ... + 2205583.

It is an arithmetic number, because the mean of its divisors is an integer number (19850103).

Almost surely, 2^74989261 is an apocalyptic number.

It is an amenable number.

74989261 is a deficient number, since it is larger than the sum of its proper divisors (4411151).

74989261 is a wasteful number, since it uses less digits than its factorization.

74989261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4411150.

The product of its digits is 217728, while the sum is 46.

The square root of 74989261 is about 8659.6339991942. The cubic root of 74989261 is about 421.6962036381.

The spelling of 74989261 in words is "seventy-four million, nine hundred eighty-nine thousand, two hundred sixty-one".