67913989 has 8 divisors (see below), whose sum is σ = 79787232. Its totient is φ = 56990640.

The previous prime is 67913987. The next prime is 67914019. The reversal of 67913989 is 98931976.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 67913989 - 2¹ = 67913987 is a prime.

It is a super-2 number, since 2×67913989² = 9224619803784242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67913983) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 237319 + ... + 237604.

It is an arithmetic number, because the mean of its divisors is an integer number (9973404).

Almost surely, 2^67913989 is an apocalyptic number.

It is an amenable number.

67913989 is a deficient number, since it is larger than the sum of its proper divisors (11873243).

67913989 is a wasteful number, since it uses less digits than its factorization.

67913989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 474947.

The product of its digits is 734832, while the sum is 52.

The square root of 67913989 is about 8240.9944181512. The cubic root of 67913989 is about 407.9933458001.

The spelling of 67913989 in words is "sixty-seven million, nine hundred thirteen thousand, nine hundred eighty-nine".