612450401 has 4 divisors (see below), whose sum is σ = 613197204. Its totient is φ = 611703600.

The previous prime is 612450383. The next prime is 612450407. The reversal of 612450401 is 104054216.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 408646225 + 203804176 = 20215^2 + 14276^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-612450401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (612450407) 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, 372170 + ... + 373811.

It is an arithmetic number, because the mean of its divisors is an integer number (153299301).

Almost surely, 2^612450401 is an apocalyptic number.

It is an amenable number.

612450401 is a deficient number, since it is larger than the sum of its proper divisors (746803).

612450401 is an equidigital number, since it uses as much as digits as its factorization.

612450401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 746802.

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 612450401 is about 24747.7352701212. The cubic root of 612450401 is about 849.2267020016.

The spelling of 612450401 in words is "six hundred twelve million, four hundred fifty thousand, four hundred one".