145207687 has 4 divisors (see below), whose sum is σ = 145306440. Its totient is φ = 145108936.

The previous prime is 145207681. The next prime is 145207703. The reversal of 145207687 is 786702541.

145207687 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 a cyclic number.

It is not a de Polignac number, because 145207687 - 2²³ = 136819079 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 (145207681) 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, 47137 + ... + 50122.

It is an arithmetic number, because the mean of its divisors is an integer number (36326610).

Almost surely, 2^145207687 is an apocalyptic number.

145207687 is a deficient number, since it is larger than the sum of its proper divisors (98753).

145207687 is an equidigital number, since it uses as much as digits as its factorization.

145207687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98752.

The product of its (nonzero) digits is 94080, while the sum is 40.

The square root of 145207687 is about 12050.2152262937. The cubic root of 145207687 is about 525.6094956128.

The spelling of 145207687 in words is "one hundred forty-five million, two hundred seven thousand, six hundred eighty-seven".