145781607 has 4 divisors (see below), whose sum is σ = 194375480. Its totient is φ = 97187736.

The previous prime is 145781599. The next prime is 145781633. The reversal of 145781607 is 706187541.

145781607 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 145781607 - 2³ = 145781599 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145781677) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24296932 + ... + 24296937.

It is an arithmetic number, because the mean of its divisors is an integer number (48593870).

Almost surely, 2^145781607 is an apocalyptic number.

145781607 is a deficient number, since it is larger than the sum of its proper divisors (48593873).

145781607 is an equidigital number, since it uses as much as digits as its factorization.

145781607 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48593872.

The product of its (nonzero) digits is 47040, while the sum is 39.

The square root of 145781607 is about 12074.0054248787. The cubic root of 145781607 is about 526.3010596602.

The spelling of 145781607 in words is "one hundred forty-five million, seven hundred eighty-one thousand, six hundred seven".