74617121 has 2 divisors, whose sum is σ = 74617122. Its totient is φ = 74617120.

The previous prime is 74617111. The next prime is 74617133. The reversal of 74617121 is 12171647.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 58736896 + 15880225 = 7664^2 + 3985^2 .

It is a cyclic number.

It is not a de Polignac number, because 74617121 - 2¹⁸ = 74354977 is a prime.

It is not a weakly prime, because it can be changed into another prime (74617111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37308560 + 37308561.

It is an arithmetic number, because the mean of its divisors is an integer number (37308561).

Almost surely, 2^74617121 is an apocalyptic number.

It is an amenable number.

74617121 is a deficient number, since it is larger than the sum of its proper divisors (1).

74617121 is an equidigital number, since it uses as much as digits as its factorization.

74617121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2352, while the sum is 29.

The square root of 74617121 is about 8638.1202237524. The cubic root of 74617121 is about 420.9974798758.

Adding to 74617121 its reverse (12171647), we get a palindrome (86788768).

The spelling of 74617121 in words is "seventy-four million, six hundred seventeen thousand, one hundred twenty-one".