145598649 has 24 divisors (see below), whose sum is σ = 228176928. Its totient is φ = 82333440.

The previous prime is 145598633. The next prime is 145598657. The reversal of 145598649 is 946895541.

145598649 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 145598649 - 2⁴ = 145598633 is a prime.

It is not an unprimeable number, because it can be changed into a prime (145598699) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9154 + ... + 19364.

It is an arithmetic number, because the mean of its divisors is an integer number (9507372).

Almost surely, 2^145598649 is an apocalyptic number.

It is an amenable number.

145598649 is a deficient number, since it is larger than the sum of its proper divisors (82578279).

145598649 is a wasteful number, since it uses less digits than its factorization.

145598649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10325 (or 10318 counting only the distinct ones).

The product of its digits is 1555200, while the sum is 51.

The square root of 145598649 is about 12066.4265215514. The cubic root of 145598649 is about 526.0807957061.

The spelling of 145598649 in words is "one hundred forty-five million, five hundred ninety-eight thousand, six hundred forty-nine".