145694655 has 12 divisors (see below), whose sum is σ = 252537480. Its totient is φ = 77703792.

The previous prime is 145694611. The next prime is 145694671. The reversal of 145694655 is 556496541.

145694655 = 1616² + 1617² + ... + 1669².

It is not a de Polignac number, because 145694655 - 2⁸ = 145694399 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 3237659 = 145694655 / (1 + 4 + 5 + 6 + 9 + 4 + 6 + 5 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 145694655.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1618785 + ... + 1618874.

It is an arithmetic number, because the mean of its divisors is an integer number (21044790).

Almost surely, 2^145694655 is an apocalyptic number.

145694655 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

145694655 is a deficient number, since it is larger than the sum of its proper divisors (106842825).

145694655 is a wasteful number, since it uses less digits than its factorization.

145694655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3237670 (or 3237667 counting only the distinct ones).

The product of its digits is 648000, while the sum is 45.

The square root of 145694655 is about 12070.4040943127. The cubic root of 145694655 is about 526.1964007525.

The spelling of 145694655 in words is "one hundred forty-five million, six hundred ninety-four thousand, six hundred fifty-five".