145677749 has 8 divisors (see below), whose sum is σ = 166561920. Its totient is φ = 124811856.

The previous prime is 145677739. The next prime is 145677793. The reversal of 145677749 is 947776541.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 145677749 - 2⁴ = 145677733 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 145677697 and 145677706.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145677739) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28232 + ... + 32990.

It is an arithmetic number, because the mean of its divisors is an integer number (20820240).

Almost surely, 2^145677749 is an apocalyptic number.

It is an amenable number.

145677749 is a deficient number, since it is larger than the sum of its proper divisors (20884171).

145677749 is an equidigital number, since it uses as much as digits as its factorization.

145677749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9139.

The product of its digits is 1481760, while the sum is 50.

The square root of 145677749 is about 12069.7037660417. The cubic root of 145677749 is about 526.1760471794.

The spelling of 145677749 in words is "one hundred forty-five million, six hundred seventy-seven thousand, seven hundred forty-nine".