67061312 has 14 divisors (see below), whose sum is σ = 133074918. Its totient is φ = 33530624.

The previous prime is 67061303. The next prime is 67061321. The reversal of 67061312 is 21316076.

It is an interprime number because it is at equal distance from previous prime (67061303) and next prime (67061321).

It can be written as a sum of positive squares in only one way, i.e., 63616576 + 3444736 = 7976^2 + 1856^2 .

It is a super-3 number, since 3×67061312³ (a number of 24 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 523853 + ... + 523980.

Almost surely, 2^67061312 is an apocalyptic number.

It is an amenable number.

67061312 is a deficient number, since it is larger than the sum of its proper divisors (66013606).

67061312 is a wasteful number, since it uses less digits than its factorization.

67061312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1047845 (or 1047835 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 26.

The square root of 67061312 is about 8189.0971419321. The cubic root of 67061312 is about 406.2786636343.

Adding to 67061312 its reverse (21316076), we get a palindrome (88377388).

The spelling of 67061312 in words is "sixty-seven million, sixty-one thousand, three hundred twelve".