75649363 has 2 divisors, whose sum is σ = 75649364. Its totient is φ = 75649362.

The previous prime is 75649309. The next prime is 75649381. The reversal of 75649363 is 36394657.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-75649363 is a prime.

It is a super-2 number, since 2×75649363² = 11445652244611538, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (75649663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37824681 + 37824682.

It is an arithmetic number, because the mean of its divisors is an integer number (37824682).

Almost surely, 2^75649363 is an apocalyptic number.

75649363 is a deficient number, since it is larger than the sum of its proper divisors (1).

75649363 is an equidigital number, since it uses as much as digits as its factorization.

75649363 is an evil number, because the sum of its binary digits is even.

The product of its digits is 408240, while the sum is 43.

The square root of 75649363 is about 8697.6642266760. The cubic root of 75649363 is about 422.9299345376.

The spelling of 75649363 in words is "seventy-five million, six hundred forty-nine thousand, three hundred sixty-three".