611512469 has 2 divisors, whose sum is σ = 611512470. Its totient is φ = 611512468.

The previous prime is 611512411. The next prime is 611512471. The reversal of 611512469 is 964215116.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 438274225 + 173238244 = 20935^2 + 13162^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-611512469 is a prime.

It is a super-2 number, since 2×611512469² = 747894999484951922, which contains 22 as substring.

Together with 611512471, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (611512409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 305756234 + 305756235.

It is an arithmetic number, because the mean of its divisors is an integer number (305756235).

Almost surely, 2^611512469 is an apocalyptic number.

It is an amenable number.

611512469 is a deficient number, since it is larger than the sum of its proper divisors (1).

611512469 is an equidigital number, since it uses as much as digits as its factorization.

611512469 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12960, while the sum is 35.

The square root of 611512469 is about 24728.7781542073. The cubic root of 611512469 is about 848.7929668232.

The spelling of 611512469 in words is "six hundred eleven million, five hundred twelve thousand, four hundred sixty-nine".