740087 has 2 divisors, whose sum is σ = 740088. Its totient is φ = 740086.

The previous prime is 740059. The next prime is 740099. The reversal of 740087 is 780047.

It is a strong prime.

It is an emirp because it is prime and its reverse (780047) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 740087 - 2⁶ = 740023 is a prime.

It is a Chen prime.

It is a nialpdrome in base 15.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (740287) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 370043 + 370044.

It is an arithmetic number, because the mean of its divisors is an integer number (370044).

2⁷⁴⁰⁰⁸⁷ is an apocalyptic number.

740087 is a deficient number, since it is larger than the sum of its proper divisors (1).

740087 is an equidigital number, since it uses as much as digits as its factorization.

740087 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1568, while the sum is 26.

The square root of 740087 is about 860.2830929409. The cubic root of 740087 is about 90.4539615047.

The spelling of 740087 in words is "seven hundred forty thousand, eighty-seven".