145019677 has 4 divisors (see below), whose sum is σ = 158203296. Its totient is φ = 131836060.

The previous prime is 145019663. The next prime is 145019681. The reversal of 145019677 is 776910541.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 145019677 - 2¹⁵ = 144986909 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 (145019657) 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 3 ways as a sum of consecutive naturals, for example, 6591793 + ... + 6591814.

It is an arithmetic number, because the mean of its divisors is an integer number (39550824).

Almost surely, 2^145019677 is an apocalyptic number.

It is an amenable number.

145019677 is a deficient number, since it is larger than the sum of its proper divisors (13183619).

145019677 is a wasteful number, since it uses less digits than its factorization.

145019677 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13183618.

The product of its (nonzero) digits is 52920, while the sum is 40.

The square root of 145019677 is about 12042.4115940288. The cubic root of 145019677 is about 525.3825505074.

The spelling of 145019677 in words is "one hundred forty-five million, nineteen thousand, six hundred seventy-seven".