67371265 has 32 divisors (see below), whose sum is σ = 90588960. Its totient is φ = 47775744.

The previous prime is 67371259. The next prime is 67371287. The reversal of 67371265 is 56217376.

67371265 is nontrivially palindromic in base 2 and base 4.

It is a Cunningham number, because it is equal to 8208²+1.

It can be written as a sum of positive squares in 16 ways, for example, as 1 + 67371264 = 1^2 + 8208^2 .

It is a 2-Lehmer number, since φ(67371265) divides (67371265-1)².

It is a cyclic number.

It is a Carmichael number.

It is not a de Polignac number, because 67371265 - 2⁷ = 67371137 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 262017 + ... + 262273.

It is an arithmetic number, because the mean of its divisors is an integer number (2830905).

It is a Poulet number, since it divides 2^67371264-1.

Almost surely, 2^67371265 is an apocalyptic number.

67371265 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

67371265 is a deficient number, since it is larger than the sum of its proper divisors (23217695).

67371265 is a wasteful number, since it uses less digits than its factorization.

67371265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 421.

The product of its digits is 52920, while the sum is 37.

The square root of 67371265 is about 8208.0000609162. Note that the first 4 decimals coincide. The cubic root of 67371265 is about 406.9036329064.

The spelling of 67371265 in words is "sixty-seven million, three hundred seventy-one thousand, two hundred sixty-five".