677742 has 16 divisors (see below), whose sum is σ = 1459920. Its totient is φ = 208512.

The previous prime is 677737. The next prime is 677767. The reversal of 677742 is 247776.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4267 + ... + 4422.

It is an arithmetic number, because the mean of its divisors is an integer number (91245).

2⁶⁷⁷⁷⁴² is an apocalyptic number.

677742 is an abundant number, since it is smaller than the sum of its proper divisors (782178).

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

677742 is a wasteful number, since it uses less digits than its factorization.

677742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8707.

The product of its digits is 16464, while the sum is 33.

The square root of 677742 is about 823.2508730636. The cubic root of 677742 is about 87.8391517697.

It can be divided in two parts, 67774 and 2, that added together give a palindrome (67776).

The spelling of 677742 in words is "six hundred seventy-seven thousand, seven hundred forty-two".