145983077 has 8 divisors (see below), whose sum is σ = 148212120. Its totient is φ = 143769600.

The previous prime is 145983067. The next prime is 145983091. The reversal of 145983077 is 770389541.

It can be written as a sum of positive squares in 4 ways, for example, as 40119556 + 105863521 = 6334^2 + 10289^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-145983077 is a prime.

It is a super-3 number, since 3×145983077³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145983007) 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 7 ways as a sum of consecutive naturals, for example, 15749 + ... + 23237.

It is an arithmetic number, because the mean of its divisors is an integer number (18526515).

Almost surely, 2^145983077 is an apocalyptic number.

It is an amenable number.

145983077 is a deficient number, since it is larger than the sum of its proper divisors (2229043).

145983077 is a wasteful number, since it uses less digits than its factorization.

145983077 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7783.

The product of its (nonzero) digits is 211680, while the sum is 44.

The square root of 145983077 is about 12082.3456745783. The cubic root of 145983077 is about 526.5433971949.

The spelling of 145983077 in words is "one hundred forty-five million, nine hundred eighty-three thousand, seventy-seven".