145222667 has 12 divisors (see below), whose sum is σ = 152521824. Its totient is φ = 138259440.

The previous prime is 145222663. The next prime is 145222709. The reversal of 145222667 is 766222541.

145222667 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 145222667 - 2² = 145222663 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145222661) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 142853 + ... + 143865.

It is an arithmetic number, because the mean of its divisors is an integer number (12710152).

Almost surely, 2^145222667 is an apocalyptic number.

145222667 is a deficient number, since it is larger than the sum of its proper divisors (7299157).

145222667 is a wasteful number, since it uses less digits than its factorization.

145222667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1330 (or 1307 counting only the distinct ones).

The product of its digits is 40320, while the sum is 35.

The square root of 145222667 is about 12050.8367759256. The cubic root of 145222667 is about 525.6275694023.

The spelling of 145222667 in words is "one hundred forty-five million, two hundred twenty-two thousand, six hundred sixty-seven".