555740649 has 16 divisors (see below), whose sum is σ = 826862400. Its totient is φ = 368899488.

The previous prime is 555740641. The next prime is 555740657. The reversal of 555740649 is 946047555.

It is an interprime number because it is at equal distance from previous prime (555740641) and next prime (555740657).

It is not a de Polignac number, because 555740649 - 2³ = 555740641 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (555740641) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37879 + ... + 50460.

It is an arithmetic number, because the mean of its divisors is an integer number (51678900).

Almost surely, 2^555740649 is an apocalyptic number.

It is an amenable number.

555740649 is a deficient number, since it is larger than the sum of its proper divisors (271121751).

555740649 is a wasteful number, since it uses less digits than its factorization.

555740649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88581 (or 88575 counting only the distinct ones).

The product of its (nonzero) digits is 756000, while the sum is 45.

The square root of 555740649 is about 23574.1521374577. The cubic root of 555740649 is about 822.1619772439.

The spelling of 555740649 in words is "five hundred fifty-five million, seven hundred forty thousand, six hundred forty-nine".