145678397 has 8 divisors (see below), whose sum is σ = 153546840. Its totient is φ = 137999680.

The previous prime is 145678381. The next prime is 145678399. The reversal of 145678397 is 793876541.

145678397 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 20484676 + 125193721 = 4526^2 + 11189^2 .

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 145678397 - 2⁴ = 145678381 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145678399) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45854 + ... + 48927.

It is an arithmetic number, because the mean of its divisors is an integer number (19193355).

Almost surely, 2^145678397 is an apocalyptic number.

It is an amenable number.

145678397 is a deficient number, since it is larger than the sum of its proper divisors (7868443).

145678397 is an equidigital number, since it uses as much as digits as its factorization.

145678397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94863.

The product of its digits is 1270080, while the sum is 50.

The square root of 145678397 is about 12069.7306100841. The cubic root of 145678397 is about 526.1768273525.

The spelling of 145678397 in words is "one hundred forty-five million, six hundred seventy-eight thousand, three hundred ninety-seven".