145270681 has 8 divisors (see below), whose sum is σ = 150326528. Its totient is φ = 140238000.

The previous prime is 145270669. The next prime is 145270709. The reversal of 145270681 is 186072541.

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

It is a cyclic number.

It is not a de Polignac number, because 145270681 - 2⁵ = 145270649 is a prime.

It is a super-2 number, since 2×145270681² = 42207141516407522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145270481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7486 + ... + 18616.

It is an arithmetic number, because the mean of its divisors is an integer number (18790816).

Almost surely, 2^145270681 is an apocalyptic number.

It is an amenable number.

145270681 is a deficient number, since it is larger than the sum of its proper divisors (5055847).

145270681 is a wasteful number, since it uses less digits than its factorization.

145270681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11583.

The product of its (nonzero) digits is 13440, while the sum is 34.

The square root of 145270681 is about 12052.8287551097. The cubic root of 145270681 is about 525.6854912630.

The spelling of 145270681 in words is "one hundred forty-five million, two hundred seventy thousand, six hundred eighty-one".