10642387 has 4 divisors (see below), whose sum is σ = 12162736. Its totient is φ = 9122040.

The previous prime is 10642381. The next prime is 10642397. The reversal of 10642387 is 78324601.

10642387 is digitally balanced in base 2 and base 8, because in such bases it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 78324601 = 787 ⋅99523.

It is a cyclic number.

It is not a de Polignac number, because 10642387 - 2⁷ = 10642259 is a prime.

It is a super-2 number, since 2×10642387² = 226520802115538, which contains 22 as substring.

It is a Duffinian number.

10642387 is strictly pandigital in base 8.

It is not an unprimeable number, because it can be changed into a prime (10642381) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 760164 + ... + 760177.

It is an arithmetic number, because the mean of its divisors is an integer number (3040684).

Almost surely, 2^10642387 is an apocalyptic number.

10642387 is a deficient number, since it is larger than the sum of its proper divisors (1520349).

10642387 is an equidigital number, since it uses as much as digits as its factorization.

10642387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1520348.

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 10642387 is about 3262.2671564420. The cubic root of 10642387 is about 219.9613361806.

Adding to 10642387 its reverse (78324601), we get a palindrome (88966988).

The spelling of 10642387 in words is "ten million, six hundred forty-two thousand, three hundred eighty-seven".