67961408 has 14 divisors (see below), whose sum is σ = 134861046. Its totient is φ = 33980672.

The previous prime is 67961407. The next prime is 67961431. The reversal of 67961408 is 80416976.

It can be written as a sum of positive squares in only one way, i.e., 51380224 + 16581184 = 7168^2 + 4072^2 .

It is not an unprimeable number, because it can be changed into a prime (67961407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 530885 + ... + 531012.

Almost surely, 2^67961408 is an apocalyptic number.

It is an amenable number.

67961408 is a deficient number, since it is larger than the sum of its proper divisors (66899638).

67961408 is a wasteful number, since it uses less digits than its factorization.

67961408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1061909 (or 1061899 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 41.

The square root of 67961408 is about 8243.8709354283. The cubic root of 67961408 is about 408.0882802692.

The spelling of 67961408 in words is "sixty-seven million, nine hundred sixty-one thousand, four hundred eight".