145649697 has 8 divisors (see below), whose sum is σ = 194825280. Its totient is φ = 96786960.

The previous prime is 145649689. The next prime is 145649711. The reversal of 145649697 is 796946541.

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

It is not a de Polignac number, because 145649697 - 2³ = 145649689 is a prime.

It is not an unprimeable number, because it can be changed into a prime (145649627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 77122 + ... + 78987.

It is an arithmetic number, because the mean of its divisors is an integer number (24353160).

Almost surely, 2^145649697 is an apocalyptic number.

It is an amenable number.

145649697 is a deficient number, since it is larger than the sum of its proper divisors (49175583).

145649697 is a wasteful number, since it uses less digits than its factorization.

145649697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156423.

The product of its digits is 1632960, while the sum is 51.

The square root of 145649697 is about 12068.5416268910. The cubic root of 145649697 is about 526.1422711724.

The spelling of 145649697 in words is "one hundred forty-five million, six hundred forty-nine thousand, six hundred ninety-seven".