145699771 has 8 divisors (see below), whose sum is σ = 175278080. Its totient is φ = 118312488.

The previous prime is 145699769. The next prime is 145699787. The reversal of 145699771 is 177996541.

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

It is not a de Polignac number, because 145699771 - 2¹ = 145699769 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145690771) 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, 547611 + ... + 547876.

It is an arithmetic number, because the mean of its divisors is an integer number (21909760).

Almost surely, 2^145699771 is an apocalyptic number.

145699771 is a deficient number, since it is larger than the sum of its proper divisors (29578309).

145699771 is a wasteful number, since it uses less digits than its factorization.

145699771 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1095513.

The product of its digits is 476280, while the sum is 49.

The square root of 145699771 is about 12070.6160157632. The cubic root of 145699771 is about 526.2025597277.

The spelling of 145699771 in words is "one hundred forty-five million, six hundred ninety-nine thousand, seven hundred seventy-one".