145197867 has 32 divisors (see below), whose sum is σ = 223257600. Its totient is φ = 83317248.

The previous prime is 145197859. The next prime is 145197869. The reversal of 145197867 is 768791541.

145197867 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 145197867 - 2³ = 145197859 is a prime.

It is not an unprimeable number, because it can be changed into a prime (145197869) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 25518 + ... + 30684.

It is an arithmetic number, because the mean of its divisors is an integer number (6976800).

Almost surely, 2^145197867 is an apocalyptic number.

145197867 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

145197867 is a deficient number, since it is larger than the sum of its proper divisors (78059733).

145197867 is a wasteful number, since it uses less digits than its factorization.

145197867 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5235.

The product of its digits is 423360, while the sum is 48.

The square root of 145197867 is about 12049.8077578026. The cubic root of 145197867 is about 525.5976468333.

The spelling of 145197867 in words is "one hundred forty-five million, one hundred ninety-seven thousand, eight hundred sixty-seven".