67861072 has 10 divisors (see below), whose sum is σ = 131480858. Its totient is φ = 33930528.

The previous prime is 67861069. The next prime is 67861081. The reversal of 67861072 is 27016876.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 39388176 + 28472896 = 6276^2 + 5336^2 .

It is a congruent number.

It is an unprimeable number.

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, 2120643 + ... + 2120674.

Almost surely, 2^67861072 is an apocalyptic number.

It is an amenable number.

67861072 is a deficient number, since it is larger than the sum of its proper divisors (63619786).

67861072 is a wasteful number, since it uses less digits than its factorization.

67861072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4241325 (or 4241319 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 37.

The square root of 67861072 is about 8237.7831969529. The cubic root of 67861072 is about 407.8873519587.

The spelling of 67861072 in words is "sixty-seven million, eight hundred sixty-one thousand, seventy-two".