145977765 has 16 divisors (see below), whose sum is σ = 239877888. Its totient is φ = 75750336.

The previous prime is 145977751. The next prime is 145977773. The reversal of 145977765 is 567779541.

It is a happy number.

145977765 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 145977765 - 2⁸ = 145977509 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 130957 + ... + 132066.

It is an arithmetic number, because the mean of its divisors is an integer number (14992368).

Almost surely, 2^145977765 is an apocalyptic number.

145977765 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

145977765 is a deficient number, since it is larger than the sum of its proper divisors (93900123).

145977765 is a wasteful number, since it uses less digits than its factorization.

145977765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263068.

The product of its digits is 1852200, while the sum is 51.

The square root of 145977765 is about 12082.1258477141. The cubic root of 145977765 is about 526.5370105358.

The spelling of 145977765 in words is "one hundred forty-five million, nine hundred seventy-seven thousand, seven hundred sixty-five".