146400661 has 4 divisors (see below), whose sum is σ = 159709824. Its totient is φ = 133091500.

The previous prime is 146400607. The next prime is 146400677. The reversal of 146400661 is 166004641.

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.

It is a cyclic number.

It is not a de Polignac number, because 146400661 - 2⁷ = 146400533 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 (146400361) 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, 6654565 + ... + 6654586.

It is an arithmetic number, because the mean of its divisors is an integer number (39927456).

Almost surely, 2^146400661 is an apocalyptic number.

146400661 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

146400661 is a deficient number, since it is larger than the sum of its proper divisors (13309163).

146400661 is a wasteful number, since it uses less digits than its factorization.

146400661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13309162.

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 146400661 is about 12099.6140847549. The cubic root of 146400661 is about 527.0449776600.

The spelling of 146400661 in words is "one hundred forty-six million, four hundred thousand, six hundred sixty-one".