7642387 has 4 divisors (see below), whose sum is σ = 7848976. Its totient is φ = 7435800.

The previous prime is 7642373. The next prime is 7642403. The reversal of 7642387 is 7832467.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7832467 = 167 ⋅46901.

It is a cyclic number.

It is not a de Polignac number, because 7642387 - 2¹⁹ = 7118099 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37), and also a Moran number because the ratio is a prime number: 206551 = 7642387 / (7 + 6 + 4 + 2 + 3 + 8 + 7).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7642487) 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, 103239 + ... + 103312.

It is an arithmetic number, because the mean of its divisors is an integer number (1962244).

Almost surely, 2^7642387 is an apocalyptic number.

7642387 is a deficient number, since it is larger than the sum of its proper divisors (206589).

7642387 is a wasteful number, since it uses less digits than its factorization.

7642387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206588.

The product of its digits is 56448, while the sum is 37.

The square root of 7642387 is about 2764.4867516413. The cubic root of 7642387 is about 196.9743496884.

The spelling of 7642387 in words is "seven million, six hundred forty-two thousand, three hundred eighty-seven".