75637669 has 2 divisors, whose sum is σ = 75637670. Its totient is φ = 75637668.

The previous prime is 75637633. The next prime is 75637687. The reversal of 75637669 is 96673657.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 50936769 + 24700900 = 7137^2 + 4970^2 .

It is an emirp because it is prime and its reverse (96673657) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 75637669 - 2¹¹ = 75635621 is a prime.

It is a super-2 number, since 2×75637669² = 11442113943507122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (75637699) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37818834 + 37818835.

It is an arithmetic number, because the mean of its divisors is an integer number (37818835).

Almost surely, 2^75637669 is an apocalyptic number.

It is an amenable number.

75637669 is a deficient number, since it is larger than the sum of its proper divisors (1).

75637669 is an equidigital number, since it uses as much as digits as its factorization.

75637669 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1428840, while the sum is 49.

The square root of 75637669 is about 8696.9919512438. The cubic root of 75637669 is about 422.9081410184.

The spelling of 75637669 in words is "seventy-five million, six hundred thirty-seven thousand, six hundred sixty-nine".