146646013 has 4 divisors (see below), whose sum is σ = 149050108. Its totient is φ = 144241920.

The previous prime is 146646001. The next prime is 146646037. The reversal of 146646013 is 310646641.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 310646641 = 47 ⋅6609503.

It can be written as a sum of positive squares in 2 ways, for example, as 5938969 + 140707044 = 2437^2 + 11862^2 .

It is a cyclic number.

It is not a de Polignac number, because 146646013 - 2¹⁷ = 146514941 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 (146646043) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1201956 + ... + 1202077.

It is an arithmetic number, because the mean of its divisors is an integer number (37262527).

Almost surely, 2^146646013 is an apocalyptic number.

It is an amenable number.

146646013 is a deficient number, since it is larger than the sum of its proper divisors (2404095).

146646013 is an equidigital number, since it uses as much as digits as its factorization.

146646013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2404094.

The product of its (nonzero) digits is 10368, while the sum is 31.

The square root of 146646013 is about 12109.7486761700. The cubic root of 146646013 is about 527.3392371899.

The spelling of 146646013 in words is "one hundred forty-six million, six hundred forty-six thousand, thirteen".