612396457 has 4 divisors (see below), whose sum is σ = 648419796. Its totient is φ = 576373120.

The previous prime is 612396427. The next prime is 612396479. The reversal of 612396457 is 754693216.

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 223084096 + 389312361 = 14936^2 + 19731^2 .

It is a cyclic number.

It is not a de Polignac number, because 612396457 - 2⁷ = 612396329 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (612396427) 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, 18011644 + ... + 18011677.

It is an arithmetic number, because the mean of its divisors is an integer number (162104949).

Almost surely, 2^612396457 is an apocalyptic number.

It is an amenable number.

612396457 is a deficient number, since it is larger than the sum of its proper divisors (36023339).

612396457 is a wasteful number, since it uses less digits than its factorization.

612396457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36023338.

The product of its digits is 272160, while the sum is 43.

The square root of 612396457 is about 24746.6453686151. The cubic root of 612396457 is about 849.2017682654.

The spelling of 612396457 in words is "six hundred twelve million, three hundred ninety-six thousand, four hundred fifty-seven".