758642 has 16 divisors (see below), whose sum is σ = 1230552. Its totient is φ = 349440.

The previous prime is 758633. The next prime is 758671. The reversal of 758642 is 246857.

It is a Cunningham number, because it is equal to 871²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 591361 + 167281 = 769^2 + 409^2 .

It is a nialpdrome in base 15.

It is a junction number, because it is equal to n+sod(n) for n = 758599 and 758608.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1592 + ... + 2012.

2⁷⁵⁸⁶⁴² is an apocalyptic number.

758642 is a deficient number, since it is larger than the sum of its proper divisors (471910).

758642 is a wasteful number, since it uses less digits than its factorization.

758642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 493.

The product of its digits is 13440, while the sum is 32.

The square root of 758642 is about 871.0005740526. Note that the first 3 decimals coincide. The cubic root of 758642 is about 91.2036657242.

The spelling of 758642 in words is "seven hundred fifty-eight thousand, six hundred forty-two".