67770231 has 4 divisors (see below), whose sum is σ = 90360312. Its totient is φ = 45180152.

The previous prime is 67770221. The next prime is 67770239. The reversal of 67770231 is 13207776.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 67770231 - 2¹⁸ = 67508087 is a prime.

It is a super-2 number, since 2×67770231² = 9185608419586722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 67770192 and 67770201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67770239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11295036 + ... + 11295041.

It is an arithmetic number, because the mean of its divisors is an integer number (22590078).

Almost surely, 2^67770231 is an apocalyptic number.

67770231 is a deficient number, since it is larger than the sum of its proper divisors (22590081).

67770231 is a wasteful number, since it uses less digits than its factorization.

67770231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22590080.

The product of its (nonzero) digits is 12348, while the sum is 33.

The square root of 67770231 is about 8232.2676705753. The cubic root of 67770231 is about 407.7052670041.

The spelling of 67770231 in words is "sixty-seven million, seven hundred seventy thousand, two hundred thirty-one".