611660049 has 64 divisors (see below), whose sum is σ = 1103155200. Its totient is φ = 291121920.

The previous prime is 611660003. The next prime is 611660053. The reversal of 611660049 is 940066116.

It is not a de Polignac number, because 611660049 - 2¹² = 611655953 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (611660249) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 446764 + ... + 448130.

It is an arithmetic number, because the mean of its divisors is an integer number (17236800).

Almost surely, 2^611660049 is an apocalyptic number.

It is an amenable number.

611660049 is a deficient number, since it is larger than the sum of its proper divisors (491495151).

611660049 is a wasteful number, since it uses less digits than its factorization.

611660049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1550.

The product of its (nonzero) digits is 7776, while the sum is 33.

The square root of 611660049 is about 24731.7619469378. The cubic root of 611660049 is about 848.8612427766.

The spelling of 611660049 in words is "six hundred eleven million, six hundred sixty thousand, forty-nine".