67561753 has 4 divisors (see below), whose sum is σ = 77213440. Its totient is φ = 57910068.

The previous prime is 67561721. The next prime is 67561759. The reversal of 67561753 is 35716576.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 67561753 - 2⁵ = 67561721 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (67561759) 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 in 3 ways as a sum of consecutive naturals, for example, 4825833 + ... + 4825846.

It is an arithmetic number, because the mean of its divisors is an integer number (19303360).

Almost surely, 2^67561753 is an apocalyptic number.

It is an amenable number.

67561753 is a deficient number, since it is larger than the sum of its proper divisors (9651687).

67561753 is an equidigital number, since it uses as much as digits as its factorization.

67561753 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9651686.

The product of its digits is 132300, while the sum is 40.

The square root of 67561753 is about 8219.5956713211. The cubic root of 67561753 is about 407.2867701483.

The spelling of 67561753 in words is "sixty-seven million, five hundred sixty-one thousand, seven hundred fifty-three".