145639570 has 8 divisors (see below), whose sum is σ = 262151244. Its totient is φ = 58255824.

The previous prime is 145639523. The next prime is 145639573. The reversal of 145639570 is 75936541.

It can be written as a sum of positive squares in 2 ways, for example, as 143209089 + 2430481 = 11967^2 + 1559^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (145639573) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7281969 + ... + 7281988.

Almost surely, 2^145639570 is an apocalyptic number.

145639570 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

145639570 is a deficient number, since it is larger than the sum of its proper divisors (116511674).

145639570 is a wasteful number, since it uses less digits than its factorization.

145639570 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14563964.

The product of its (nonzero) digits is 113400, while the sum is 40.

The square root of 145639570 is about 12068.1220577188. The cubic root of 145639570 is about 526.1300766939.

The spelling of 145639570 in words is "one hundred forty-five million, six hundred thirty-nine thousand, five hundred seventy".