613550145 has 64 divisors (see below), whose sum is σ = 1138717440. Its totient is φ = 279379968.

The previous prime is 613550143. The next prime is 613550149. The reversal of 613550145 is 541055316.

It is not a de Polignac number, because 613550145 - 2¹ = 613550143 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (613550141) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 194017 + ... + 197153.

It is an arithmetic number, because the mean of its divisors is an integer number (17792460).

Almost surely, 2^613550145 is an apocalyptic number.

613550145 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

613550145 is a deficient number, since it is larger than the sum of its proper divisors (525167295).

613550145 is a wasteful number, since it uses less digits than its factorization.

613550145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3234.

The product of its (nonzero) digits is 9000, while the sum is 30.

The square root of 613550145 is about 24769.9443883106. The cubic root of 613550145 is about 849.7347015185.

It can be divided in two parts, 6135 and 50145, that added together give a triangular number (56280 = T₃₃₅).

The spelling of 613550145 in words is "six hundred thirteen million, five hundred fifty thousand, one hundred forty-five".