67561652 has 6 divisors (see below), whose sum is σ = 118232898. Its totient is φ = 33780824.

The previous prime is 67561639. The next prime is 67561657. The reversal of 67561652 is 25616576.

It can be written as a sum of positive squares in only one way, i.e., 67305616 + 256036 = 8204^2 + 506^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67561657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8445203 + ... + 8445210.

It is an arithmetic number, because the mean of its divisors is an integer number (19705483).

Almost surely, 2^67561652 is an apocalyptic number.

It is an amenable number.

67561652 is a deficient number, since it is larger than the sum of its proper divisors (50671246).

67561652 is a wasteful number, since it uses less digits than its factorization.

67561652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16890417 (or 16890415 counting only the distinct ones).

The product of its digits is 75600, while the sum is 38.

The square root of 67561652 is about 8219.5895274643. The cubic root of 67561652 is about 407.2865671933.

The spelling of 67561652 in words is "sixty-seven million, five hundred sixty-one thousand, six hundred fifty-two".