74785897 has 2 divisors, whose sum is σ = 74785898. Its totient is φ = 74785896.

The previous prime is 74785877. The next prime is 74785951. The reversal of 74785897 is 79858747.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 46526041 + 28259856 = 6821^2 + 5316^2 .

It is a cyclic number.

It is not a de Polignac number, because 74785897 - 2¹⁹ = 74261609 is a prime.

It is not a weakly prime, because it can be changed into another prime (74785807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37392948 + 37392949.

It is an arithmetic number, because the mean of its divisors is an integer number (37392949).

Almost surely, 2^74785897 is an apocalyptic number.

It is an amenable number.

74785897 is a deficient number, since it is larger than the sum of its proper divisors (1).

74785897 is an equidigital number, since it uses as much as digits as its factorization.

74785897 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3951360, while the sum is 55.

The square root of 74785897 is about 8647.8839608311. The cubic root of 74785897 is about 421.3146580449.

The spelling of 74785897 in words is "seventy-four million, seven hundred eighty-five thousand, eight hundred ninety-seven".