612400501 has 4 divisors (see below), whose sum is σ = 616806400. Its totient is φ = 607994604.

The previous prime is 612400487. The next prime is 612400513. The reversal of 612400501 is 105004216.

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 612400501 - 2¹⁵ = 612367733 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 (612407501) 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, 2202741 + ... + 2203018.

It is an arithmetic number, because the mean of its divisors is an integer number (154201600).

Almost surely, 2^612400501 is an apocalyptic number.

It is an amenable number.

612400501 is a deficient number, since it is larger than the sum of its proper divisors (4405899).

612400501 is a wasteful number, since it uses less digits than its factorization.

612400501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4405898.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 612400501 is about 24746.7270765247. The cubic root of 612400501 is about 849.2036375144.

Adding to 612400501 its reverse (105004216), we get a palindrome (717404717).

The spelling of 612400501 in words is "six hundred twelve million, four hundred thousand, five hundred one".