146616401 has 4 divisors (see below), whose sum is σ = 146755392. Its totient is φ = 146477412.

The previous prime is 146616397. The next prime is 146616413. The reversal of 146616401 is 104616641.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 104616641 = 19 ⋅5506139.

It is a cyclic number.

It is not a de Polignac number, because 146616401 - 2² = 146616397 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (146616101) 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, 67901 + ... + 70026.

It is an arithmetic number, because the mean of its divisors is an integer number (36688848).

Almost surely, 2^146616401 is an apocalyptic number.

It is an amenable number.

146616401 is a deficient number, since it is larger than the sum of its proper divisors (138991).

146616401 is a wasteful number, since it uses less digits than its factorization.

146616401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138990.

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 146616401 is about 12108.5259631385. The cubic root of 146616401 is about 527.3037398714.

The spelling of 146616401 in words is "one hundred forty-six million, six hundred sixteen thousand, four hundred one".