74130757 has 4 divisors (see below), whose sum is σ = 76687020. Its totient is φ = 71574496.

The previous prime is 74130733. The next prime is 74130769. The reversal of 74130757 is 75703147.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 39955041 + 34175716 = 6321^2 + 5846^2 .

It is a cyclic number.

It is not a de Polignac number, because 74130757 - 2¹⁹ = 73606469 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74130787) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1278088 + ... + 1278145.

It is an arithmetic number, because the mean of its divisors is an integer number (19171755).

Almost surely, 2^74130757 is an apocalyptic number.

It is an amenable number.

74130757 is a deficient number, since it is larger than the sum of its proper divisors (2556263).

74130757 is a wasteful number, since it uses less digits than its factorization.

74130757 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2556262.

The product of its (nonzero) digits is 20580, while the sum is 34.

The square root of 74130757 is about 8609.9220089383. The cubic root of 74130757 is about 420.0807800028.

The spelling of 74130757 in words is "seventy-four million, one hundred thirty thousand, seven hundred fifty-seven".