612511463 has 4 divisors (see below), whose sum is σ = 613117128. Its totient is φ = 611905800.

The previous prime is 612511429. The next prime is 612511477. The reversal of 612511463 is 364115216.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 612511463 - 2⁶ = 612511399 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 (612511663) 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, 301313 + ... + 303338.

It is an arithmetic number, because the mean of its divisors is an integer number (153279282).

Almost surely, 2^612511463 is an apocalyptic number.

612511463 is a deficient number, since it is larger than the sum of its proper divisors (605665).

612511463 is a wasteful number, since it uses less digits than its factorization.

612511463 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 605664.

The product of its digits is 4320, while the sum is 29.

The square root of 612511463 is about 24748.9689280180. The cubic root of 612511463 is about 849.2549240190.

Adding to 612511463 its reverse (364115216), we get a palindrome (976626679).

The spelling of 612511463 in words is "six hundred twelve million, five hundred eleven thousand, four hundred sixty-three".