5640761 has 16 divisors (see below), whose sum is σ = 6858240. Its totient is φ = 4536000.

The previous prime is 5640743. The next prime is 5640769. The reversal of 5640761 is 1670465.

It is not a de Polignac number, because 5640761 - 2²² = 1446457 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5640769) 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, 7136 + ... + 7886.

It is an arithmetic number, because the mean of its divisors is an integer number (428640).

Almost surely, 2^5640761 is an apocalyptic number.

It is an amenable number.

5640761 is a deficient number, since it is larger than the sum of its proper divisors (1217479).

5640761 is a wasteful number, since it uses less digits than its factorization.

5640761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 824.

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 5640761 is about 2375.0286314064. The cubic root of 5640761 is about 178.0106146092.

The spelling of 5640761 in words is "five million, six hundred forty thousand, seven hundred sixty-one".