67561245 has 48 divisors (see below), whose sum is σ = 127296000. Its totient is φ = 33022080.

The previous prime is 67561243. The next prime is 67561261. The reversal of 67561245 is 54216576.

It is a happy number.

It is not a de Polignac number, because 67561245 - 2¹ = 67561243 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67561243) 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 47 ways as a sum of consecutive naturals, for example, 25231 + ... + 27779.

It is an arithmetic number, because the mean of its divisors is an integer number (2652000).

Almost surely, 2^67561245 is an apocalyptic number.

It is an amenable number.

67561245 is a deficient number, since it is larger than the sum of its proper divisors (59734755).

67561245 is a wasteful number, since it uses less digits than its factorization.

67561245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2610 (or 2607 counting only the distinct ones).

The product of its digits is 50400, while the sum is 36.

The square root of 67561245 is about 8219.5647694997. The cubic root of 67561245 is about 407.2857493430.

It can be divided in two parts, 6756 and 1245, that added together give a triangular number (8001 = T₁₂₆).

The spelling of 67561245 in words is "sixty-seven million, five hundred sixty-one thousand, two hundred forty-five".