145267769 has 2 divisors, whose sum is σ = 145267770. Its totient is φ = 145267768.

The previous prime is 145267763. The next prime is 145267781. The reversal of 145267769 is 967762541.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 125731369 + 19536400 = 11213^2 + 4420^2 .

It is a cyclic number.

It is not a de Polignac number, because 145267769 - 2²⁰ = 144219193 is a prime.

It is a super-2 number, since 2×145267769² = 42205449420474722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (145267763) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72633884 + 72633885.

It is an arithmetic number, because the mean of its divisors is an integer number (72633885).

Almost surely, 2^145267769 is an apocalyptic number.

It is an amenable number.

145267769 is a deficient number, since it is larger than the sum of its proper divisors (1).

145267769 is an equidigital number, since it uses as much as digits as its factorization.

145267769 is an evil number, because the sum of its binary digits is even.

The product of its digits is 635040, while the sum is 47.

The square root of 145267769 is about 12052.7079529872. The cubic root of 145267769 is about 525.6819787250.

The spelling of 145267769 in words is "one hundred forty-five million, two hundred sixty-seven thousand, seven hundred sixty-nine".