10287691 has 8 divisors (see below), whose sum is σ = 10666368. Its totient is φ = 9912000.

The previous prime is 10287661. The next prime is 10287709. The reversal of 10287691 is 19678201.

It is a happy number.

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 10287691 - 2¹³ = 10279499 is a prime.

It is a super-2 number, since 2×10287691² = 211673172222962, which contains 22 as substring.

It is a Duffinian number.

It is a nialpdrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (10287611) 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, 8121 + ... + 9301.

It is an arithmetic number, because the mean of its divisors is an integer number (1333296).

Almost surely, 2^10287691 is an apocalyptic number.

10287691 is a deficient number, since it is larger than the sum of its proper divisors (378677).

10287691 is a wasteful number, since it uses less digits than its factorization.

10287691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1493.

The product of its (nonzero) digits is 6048, while the sum is 34.

The square root of 10287691 is about 3207.4430626279. The cubic root of 10287691 is about 217.4900052658.

The spelling of 10287691 in words is "ten million, two hundred eighty-seven thousand, six hundred ninety-one".