67609542 has 64 divisors (see below), whose sum is σ = 181569024. Its totient is φ = 16208640.

The previous prime is 67609541. The next prime is 67609573. The reversal of 67609542 is 24590676.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a self number, because there is not a number n which added to its sum of digits gives 67609542.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67609541) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 378 + ... + 11634.

It is an arithmetic number, because the mean of its divisors is an integer number (2837016).

Almost surely, 2^67609542 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 67609542, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (90784512).

67609542 is an abundant number, since it is smaller than the sum of its proper divisors (113959482).

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

67609542 is a wasteful number, since it uses less digits than its factorization.

67609542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11293.

The product of its (nonzero) digits is 90720, while the sum is 39.

The square root of 67609542 is about 8222.5021739128. The cubic root of 67609542 is about 407.3827773281.

The spelling of 67609542 in words is "sixty-seven million, six hundred nine thousand, five hundred forty-two".