67897390 has 16 divisors (see below), whose sum is σ = 133326000. Its totient is φ = 24689920.

The previous prime is 67897369. The next prime is 67897391. The reversal of 67897390 is 9379876.

It is a super-2 number, since 2×67897390² = 9220111137624200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67897391) 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, 308515 + ... + 308734.

It is an arithmetic number, because the mean of its divisors is an integer number (8332875).

Almost surely, 2^67897390 is an apocalyptic number.

67897390 is a deficient number, since it is larger than the sum of its proper divisors (65428610).

67897390 is a wasteful number, since it uses less digits than its factorization.

67897390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 617267.

The product of its (nonzero) digits is 571536, while the sum is 49.

The square root of 67897390 is about 8239.9872572717. The cubic root of 67897390 is about 407.9601035896.

The spelling of 67897390 in words is "sixty-seven million, eight hundred ninety-seven thousand, three hundred ninety".