2658987 has 20 divisors (see below), whose sum is σ = 4207896. Its totient is φ = 1667520.

The previous prime is 2658983. The next prime is 2658989. The reversal of 2658987 is 7898562.

It is not a de Polignac number, because 2658987 - 2² = 2658983 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2658983) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 412 + ... + 2342.

2^2658987 is an apocalyptic number.

2658987 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

2658987 is a deficient number, since it is larger than the sum of its proper divisors (1548909).

2658987 is a wasteful number, since it uses less digits than its factorization.

2658987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1960 (or 1951 counting only the distinct ones).

The product of its digits is 241920, while the sum is 45.

The square root of 2658987 is about 1630.6400583820. The cubic root of 2658987 is about 138.5390072894.

The spelling of 2658987 in words is "two million, six hundred fifty-eight thousand, nine hundred eighty-seven".