774642 has 32 divisors (see below), whose sum is σ = 1721664. Its totient is φ = 232320.

The previous prime is 774629. The next prime is 774643. The reversal of 774642 is 246477.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (774643) by changing a digit.

774642 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7938 + ... + 8034.

It is an arithmetic number, because the mean of its divisors is an integer number (53802).

2⁷⁷⁴⁶⁴² is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 774642, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (860832).

774642 is an abundant number, since it is smaller than the sum of its proper divisors (947022).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

774642 is a wasteful number, since it uses less digits than its factorization.

774642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135 (or 113 counting only the distinct ones).

The product of its digits is 9408, while the sum is 30.

The square root of 774642 is about 880.1374892595. The cubic root of 774642 is about 91.8403817005.

The spelling of 774642 in words is "seven hundred seventy-four thousand, six hundred forty-two".