67561962 has 64 divisors (see below), whose sum is σ = 151320960. Its totient is φ = 19977984.

The previous prime is 67561957. The next prime is 67561969. The reversal of 67561962 is 26916576.

It is not an unprimeable number, because it can be changed into a prime (67561969) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 243768 + ... + 244044.

It is an arithmetic number, because the mean of its divisors is an integer number (2364390).

Almost surely, 2^67561962 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 67561962, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (75660480).

67561962 is an abundant number, since it is smaller than the sum of its proper divisors (83758998).

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

67561962 is a wasteful number, since it uses less digits than its factorization.

67561962 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 407.

The product of its digits is 136080, while the sum is 42.

The square root of 67561962 is about 8219.6083848320. The cubic root of 67561962 is about 407.2871901238.

The spelling of 67561962 in words is "sixty-seven million, five hundred sixty-one thousand, nine hundred sixty-two".