7457987 has 2 divisors, whose sum is σ = 7457988. Its totient is φ = 7457986.

The previous prime is 7457953. The next prime is 7457993. The reversal of 7457987 is 7897547.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 7457987 - 2⁸ = 7457731 is a prime.

It is a zygodrome in base 2.

It is not a weakly prime, because it can be changed into another prime (7457927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3728993 + 3728994.

It is an arithmetic number, because the mean of its divisors is an integer number (3728994).

Almost surely, 2^7457987 is an apocalyptic number.

7457987 is a deficient number, since it is larger than the sum of its proper divisors (1).

7457987 is an equidigital number, since it uses as much as digits as its factorization.

7457987 is an evil number, because the sum of its binary digits is even.

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

The square root of 7457987 is about 2730.9315260548. The cubic root of 7457987 is about 195.3771967046.

The spelling of 7457987 in words is "seven million, four hundred fifty-seven thousand, nine hundred eighty-seven".