2635987 has 2 divisors, whose sum is σ = 2635988. Its totient is φ = 2635986.

The previous prime is 2635979. The next prime is 2636009. The reversal of 2635987 is 7895362.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2635987 - 2³ = 2635979 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2635907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1317993 + 1317994.

It is an arithmetic number, because the mean of its divisors is an integer number (1317994).

2^2635987 is an apocalyptic number.

2635987 is a deficient number, since it is larger than the sum of its proper divisors (1).

2635987 is an equidigital number, since it uses as much as digits as its factorization.

2635987 is an evil number, because the sum of its binary digits is even.

The product of its digits is 90720, while the sum is 40.

The square root of 2635987 is about 1623.5722958957. The cubic root of 2635987 is about 138.1383999749.

The spelling of 2635987 in words is "two million, six hundred thirty-five thousand, nine hundred eighty-seven".