74289757 has 4 divisors (see below), whose sum is σ = 74832156. Its totient is φ = 73747360.

The previous prime is 74289697. The next prime is 74289763. The reversal of 74289757 is 75798247.

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 14907321 + 59382436 = 3861^2 + 7706^2 .

It is a cyclic number.

It is not a de Polignac number, because 74289757 - 2¹¹ = 74287709 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 74289757.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74289157) 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, 270994 + ... + 271267.

It is an arithmetic number, because the mean of its divisors is an integer number (18708039).

Almost surely, 2^74289757 is an apocalyptic number.

It is an amenable number.

74289757 is a deficient number, since it is larger than the sum of its proper divisors (542399).

74289757 is a wasteful number, since it uses less digits than its factorization.

74289757 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 542398.

The product of its digits is 987840, while the sum is 49.

The square root of 74289757 is about 8619.1505962015. The cubic root of 74289757 is about 420.3809035044.

The spelling of 74289757 in words is "seventy-four million, two hundred eighty-nine thousand, seven hundred fifty-seven".