74873261 has 2 divisors, whose sum is σ = 74873262. Its totient is φ = 74873260.

The previous prime is 74873213. The next prime is 74873317. The reversal of 74873261 is 16237847.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 44689225 + 30184036 = 6685^2 + 5494^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-74873261 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (74873761) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37436630 + 37436631.

It is an arithmetic number, because the mean of its divisors is an integer number (37436631).

Almost surely, 2^74873261 is an apocalyptic number.

It is an amenable number.

74873261 is a deficient number, since it is larger than the sum of its proper divisors (1).

74873261 is an equidigital number, since it uses as much as digits as its factorization.

74873261 is an evil number, because the sum of its binary digits is even.

The product of its digits is 56448, while the sum is 38.

The square root of 74873261 is about 8652.9336643707. The cubic root of 74873261 is about 421.4786524689.

The spelling of 74873261 in words is "seventy-four million, eight hundred seventy-three thousand, two hundred sixty-one".