67655742 has 64 divisors (see below), whose sum is σ = 176062464. Its totient is φ = 16806240.

The previous prime is 67655737. The next prime is 67655773. The reversal of 67655742 is 24755676.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 67655694 and 67655703.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7443 + ... + 13809.

It is an arithmetic number, because the mean of its divisors is an integer number (2750976).

Almost surely, 2^67655742 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 67655742, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (88031232).

67655742 is an abundant number, since it is smaller than the sum of its proper divisors (108406722).

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

67655742 is a wasteful number, since it uses less digits than its factorization.

67655742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6413.

The product of its digits is 352800, while the sum is 42.

The square root of 67655742 is about 8225.3110579479. The cubic root of 67655742 is about 407.4755492374.

The spelling of 67655742 in words is "sixty-seven million, six hundred fifty-five thousand, seven hundred forty-two".