145567678 has 4 divisors (see below), whose sum is σ = 218351520. Its totient is φ = 72783838.

The previous prime is 145567649. The next prime is 145567693. The reversal of 145567678 is 876765541.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 876765541 = 6701 ⋅130841.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 36391918 + ... + 36391921.

It is an arithmetic number, because the mean of its divisors is an integer number (54587880).

Almost surely, 2^145567678 is an apocalyptic number.

145567678 is a deficient number, since it is larger than the sum of its proper divisors (72783842).

145567678 is an equidigital number, since it uses as much as digits as its factorization.

145567678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72783841.

The product of its digits is 1411200, while the sum is 49.

The square root of 145567678 is about 12065.1430990270. The cubic root of 145567678 is about 526.0434913221.

The spelling of 145567678 in words is "one hundred forty-five million, five hundred sixty-seven thousand, six hundred seventy-eight".