612508457 has 4 divisors (see below), whose sum is σ = 668191056. Its totient is φ = 556825860.

The previous prime is 612508451. The next prime is 612508459. The reversal of 612508457 is 754805216.

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 a de Polignac number, because none of the positive numbers 2^k-612508457 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 612508457.

It is not an unprimeable number, because it can be changed into a prime (612508451) 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, 27841283 + ... + 27841304.

It is an arithmetic number, because the mean of its divisors is an integer number (167047764).

Almost surely, 2^612508457 is an apocalyptic number.

It is an amenable number.

612508457 is a deficient number, since it is larger than the sum of its proper divisors (55682599).

612508457 is a wasteful number, since it uses less digits than its factorization.

612508457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55682598.

The product of its (nonzero) digits is 67200, while the sum is 38.

The square root of 612508457 is about 24748.9081981408. The cubic root of 612508457 is about 849.2535347310.

The spelling of 612508457 in words is "six hundred twelve million, five hundred eight thousand, four hundred fifty-seven".