67997093 has 8 divisors (see below), whose sum is σ = 72069912. Its totient is φ = 63932416.

The previous prime is 67997081. The next prime is 67997101. The reversal of 67997093 is 39079976.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 25786084 + 42211009 = 5078^2 + 6497^2 .

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 67997093 - 2⁴ = 67997077 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67997053) 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, 27671 + ... + 30027.

It is an arithmetic number, because the mean of its divisors is an integer number (9008739).

Almost surely, 2^67997093 is an apocalyptic number.

It is an amenable number.

67997093 is a deficient number, since it is larger than the sum of its proper divisors (4072819).

67997093 is a wasteful number, since it uses less digits than its factorization.

67997093 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4071.

The product of its (nonzero) digits is 642978, while the sum is 50.

The square root of 67997093 is about 8246.0349865860. The cubic root of 67997093 is about 408.1596937503.

The spelling of 67997093 in words is "sixty-seven million, nine hundred ninety-seven thousand, ninety-three".