75490787 has 2 divisors, whose sum is σ = 75490788. Its totient is φ = 75490786.

The previous prime is 75490783. The next prime is 75490813. The reversal of 75490787 is 78709457.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 75490787 - 2² = 75490783 is a prime.

It is not a weakly prime, because it can be changed into another prime (75490783) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37745393 + 37745394.

It is an arithmetic number, because the mean of its divisors is an integer number (37745394).

Almost surely, 2^75490787 is an apocalyptic number.

75490787 is a deficient number, since it is larger than the sum of its proper divisors (1).

75490787 is an equidigital number, since it uses as much as digits as its factorization.

75490787 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 493920, while the sum is 47.

The square root of 75490787 is about 8688.5434337408. The cubic root of 75490787 is about 422.6342129309.

The spelling of 75490787 in words is "seventy-five million, four hundred ninety thousand, seven hundred eighty-seven".