613609769 has 16 divisors (see below), whose sum is σ = 661274880. Its totient is φ = 567544320.

The previous prime is 613609757. The next prime is 613609783. The reversal of 613609769 is 967906316.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-613609769 is a prime.

It is a super-2 number, since 2×613609769² = 753033897224466722, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (47).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (613603769) 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 15 ways as a sum of consecutive naturals, for example, 600479 + ... + 601499.

It is an arithmetic number, because the mean of its divisors is an integer number (41329680).

Almost surely, 2^613609769 is an apocalyptic number.

It is an amenable number.

613609769 is a deficient number, since it is larger than the sum of its proper divisors (47665111).

613609769 is a wasteful number, since it uses less digits than its factorization.

613609769 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1760.

The product of its (nonzero) digits is 367416, while the sum is 47.

The square root of 613609769 is about 24771.1479144589. The cubic root of 613609769 is about 849.7622259956.

The spelling of 613609769 in words is "six hundred thirteen million, six hundred nine thousand, seven hundred sixty-nine".