145797644 has 48 divisors (see below), whose sum is σ = 285985728. Its totient is φ = 64677888.

The previous prime is 145797643. The next prime is 145797671. The reversal of 145797644 is 446797541.

It is not an unprimeable number, because it can be changed into a prime (145797643) 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, 113534 + ... + 114810.

It is an arithmetic number, because the mean of its divisors is an integer number (5958036).

Almost surely, 2^145797644 is an apocalyptic number.

It is an amenable number.

145797644 is a deficient number, since it is larger than the sum of its proper divisors (140188084).

145797644 is a wasteful number, since it uses less digits than its factorization.

145797644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1394 (or 1392 counting only the distinct ones).

The product of its digits is 846720, while the sum is 47.

The square root of 145797644 is about 12074.6695192871. The cubic root of 145797644 is about 526.3203578895.

The spelling of 145797644 in words is "one hundred forty-five million, seven hundred ninety-seven thousand, six hundred forty-four".