74620261 has 2 divisors, whose sum is σ = 74620262. Its totient is φ = 74620260.

The previous prime is 74620253. The next prime is 74620279. The reversal of 74620261 is 16202647.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 57851236 + 16769025 = 7606^2 + 4095^2 .

It is an emirp because it is prime and its reverse (16202647) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 74620261 - 2³ = 74620253 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (74620061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37310130 + 37310131.

It is an arithmetic number, because the mean of its divisors is an integer number (37310131).

Almost surely, 2^74620261 is an apocalyptic number.

It is an amenable number.

74620261 is a deficient number, since it is larger than the sum of its proper divisors (1).

74620261 is an equidigital number, since it uses as much as digits as its factorization.

74620261 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 74620261 is about 8638.3019743466. The cubic root of 74620261 is about 421.0033851940.

The spelling of 74620261 in words is "seventy-four million, six hundred twenty thousand, two hundred sixty-one".