145709677 has 2 divisors, whose sum is σ = 145709678. Its totient is φ = 145709676.

The previous prime is 145709647. The next prime is 145709687. The reversal of 145709677 is 776907541.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 83283876 + 62425801 = 9126^2 + 7901^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-145709677 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145709647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72854838 + 72854839.

It is an arithmetic number, because the mean of its divisors is an integer number (72854839).

Almost surely, 2^145709677 is an apocalyptic number.

It is an amenable number.

145709677 is a deficient number, since it is larger than the sum of its proper divisors (1).

145709677 is an equidigital number, since it uses as much as digits as its factorization.

145709677 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 370440, while the sum is 46.

The square root of 145709677 is about 12071.0263441018. The cubic root of 145709677 is about 526.2144848080.

The spelling of 145709677 in words is "one hundred forty-five million, seven hundred nine thousand, six hundred seventy-seven".