145664603 has 6 divisors (see below), whose sum is σ = 169446636. Its totient is φ = 124855332.

The previous prime is 145664599. The next prime is 145664611. The reversal of 145664603 is 306466541.

It is not a de Polignac number, because 145664603 - 2² = 145664599 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145664503) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1486325 + ... + 1486422.

It is an arithmetic number, because the mean of its divisors is an integer number (28241106).

Almost surely, 2^145664603 is an apocalyptic number.

145664603 is a deficient number, since it is larger than the sum of its proper divisors (23782033).

145664603 is an equidigital number, since it uses as much as digits as its factorization.

145664603 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2972761 (or 2972754 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 35.

The square root of 145664603 is about 12069.1591670671. The cubic root of 145664603 is about 526.1602192797.

The spelling of 145664603 in words is "one hundred forty-five million, six hundred sixty-four thousand, six hundred three".