145691344 has 10 divisors (see below), whose sum is σ = 282277010. Its totient is φ = 72845664.

The previous prime is 145691341. The next prime is 145691347. The reversal of 145691344 is 443196541.

It is an interprime number because it is at equal distance from previous prime (145691341) and next prime (145691347).

It can be written as a sum of positive squares in only one way, i.e., 122766400 + 22924944 = 11080^2 + 4788^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145691341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4552839 + ... + 4552870.

It is an arithmetic number, because the mean of its divisors is an integer number (28227701).

Almost surely, 2^145691344 is an apocalyptic number.

It is an amenable number.

145691344 is a deficient number, since it is larger than the sum of its proper divisors (136585666).

145691344 is an equidigital number, since it uses as much as digits as its factorization.

145691344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9105717 (or 9105711 counting only the distinct ones).

The product of its digits is 51840, while the sum is 37.

The square root of 145691344 is about 12070.2669398817. The cubic root of 145691344 is about 526.1924146775.

The spelling of 145691344 in words is "one hundred forty-five million, six hundred ninety-one thousand, three hundred forty-four".