611434651 has 4 divisors (see below), whose sum is σ = 611729712. Its totient is φ = 611139592.

The previous prime is 611434643. The next prime is 611434661. The reversal of 611434651 is 156434116.

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 611434651 - 2³ = 611434643 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (611434661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 144400 + ... + 148573.

It is an arithmetic number, because the mean of its divisors is an integer number (152932428).

Almost surely, 2^611434651 is an apocalyptic number.

611434651 is a deficient number, since it is larger than the sum of its proper divisors (295061).

611434651 is a wasteful number, since it uses less digits than its factorization.

611434651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 295060.

The product of its digits is 8640, while the sum is 31.

The square root of 611434651 is about 24727.2046742045. The cubic root of 611434651 is about 848.7569609218.

Adding to 611434651 its reverse (156434116), we get a palindrome (767868767).

The spelling of 611434651 in words is "six hundred eleven million, four hundred thirty-four thousand, six hundred fifty-one".