2690987291 has 8 divisors (see below), whose sum is σ = 2712010224. Its totient is φ = 2669984640.

The previous prime is 2690987269. The next prime is 2690987297. The reversal of 2690987291 is 1927890962.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2690987291 - 2¹⁰ = 2690986267 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2690987297) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 363911 + ... + 371231.

It is an arithmetic number, because the mean of its divisors is an integer number (339001278).

Almost surely, 2^2690987291 is an apocalyptic number.

2690987291 is a deficient number, since it is larger than the sum of its proper divisors (21022933).

2690987291 is a wasteful number, since it uses less digits than its factorization.

2690987291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10141.

The product of its (nonzero) digits is 979776, while the sum is 53.

The square root of 2690987291 is about 51874.7269004859. The cubic root of 2690987291 is about 1390.9255418232.

The spelling of 2690987291 in words is "two billion, six hundred ninety million, nine hundred eighty-seven thousand, two hundred ninety-one".