787642 has 8 divisors (see below), whose sum is σ = 1188000. Its totient is φ = 391644.

The previous prime is 787639. The next prime is 787649. The reversal of 787642 is 246787.

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

It is a junction number, because it is equal to n+sod(n) for n = 787598 and 787607.

It is not an unprimeable number, because it can be changed into a prime (787649) 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, 592 + ... + 1387.

It is an arithmetic number, because the mean of its divisors is an integer number (148500).

2⁷⁸⁷⁶⁴² is an apocalyptic number.

787642 is a deficient number, since it is larger than the sum of its proper divisors (400358).

787642 is a wasteful number, since it uses less digits than its factorization.

787642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2180.

The product of its digits is 18816, while the sum is 34.

The square root of 787642 is about 887.4919717947. The cubic root of 787642 is about 92.3512877051.

The spelling of 787642 in words is "seven hundred eighty-seven thousand, six hundred forty-two".