145078786 has 4 divisors (see below), whose sum is σ = 217618182. Its totient is φ = 72539392.

The previous prime is 145078783. The next prime is 145078789. The reversal of 145078786 is 687870541.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 687870541 = 17 ⋅40462973.

It is an interprime number because it is at equal distance from previous prime (145078783) and next prime (145078789).

It can be written as a sum of positive squares in only one way, i.e., 128391561 + 16687225 = 11331^2 + 4085^2 .

It is not an unprimeable number, because it can be changed into a prime (145078783) 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 as a sum of consecutive naturals, namely, 36269695 + ... + 36269698.

Almost surely, 2^145078786 is an apocalyptic number.

145078786 is a deficient number, since it is larger than the sum of its proper divisors (72539396).

145078786 is an equidigital number, since it uses as much as digits as its factorization.

145078786 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72539395.

The product of its (nonzero) digits is 376320, while the sum is 46.

The square root of 145078786 is about 12044.8655451192. The cubic root of 145078786 is about 525.4539215552.

The spelling of 145078786 in words is "one hundred forty-five million, seventy-eight thousand, seven hundred eighty-six".