145217699 has 16 divisors (see below), whose sum is σ = 166973184. Its totient is φ = 125004000.

The previous prime is 145217693. The next prime is 145217701. The reversal of 145217699 is 996712541.

145217699 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-145217699 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145217693) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22712 + ... + 28394.

It is an arithmetic number, because the mean of its divisors is an integer number (10435824).

Almost surely, 2^145217699 is an apocalyptic number.

145217699 is a deficient number, since it is larger than the sum of its proper divisors (21755485).

145217699 is a wasteful number, since it uses less digits than its factorization.

145217699 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5818.

The product of its digits is 136080, while the sum is 44.

The square root of 145217699 is about 12050.6306473977. The cubic root of 145217699 is about 525.6215755090.

The spelling of 145217699 in words is "one hundred forty-five million, two hundred seventeen thousand, six hundred ninety-nine".