74272897 has 2 divisors, whose sum is σ = 74272898. Its totient is φ = 74272896.

The previous prime is 74272883. The next prime is 74272943. The reversal of 74272897 is 79827247.

It is an a-pointer prime, because the next prime (74272943) can be obtained adding 74272897 to its sum of digits (46).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 44635761 + 29637136 = 6681^2 + 5444^2 .

It is a cyclic number.

It is not a de Polignac number, because 74272897 - 2¹⁵ = 74240129 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (74272837) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37136448 + 37136449.

It is an arithmetic number, because the mean of its divisors is an integer number (37136449).

Almost surely, 2^74272897 is an apocalyptic number.

It is an amenable number.

74272897 is a deficient number, since it is larger than the sum of its proper divisors (1).

74272897 is an equidigital number, since it uses as much as digits as its factorization.

74272897 is an evil number, because the sum of its binary digits is even.

The product of its digits is 395136, while the sum is 46.

The square root of 74272897 is about 8618.1724860901. The cubic root of 74272897 is about 420.3490993968.

The spelling of 74272897 in words is "seventy-four million, two hundred seventy-two thousand, eight hundred ninety-seven".