740561361 has 16 divisors (see below), whose sum is σ = 1046260800. Its totient is φ = 464327168.

The previous prime is 740561321. The next prime is 740561363. The reversal of 740561361 is 163165047.

It is a cyclic number.

It is not a de Polignac number, because 740561361 - 2¹⁷ = 740430289 is a prime.

It is a super-2 number, since 2×740561361² = 1096862258812344642, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (740561363) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 78085 + ... + 87053.

It is an arithmetic number, because the mean of its divisors is an integer number (65391300).

Almost surely, 2^740561361 is an apocalyptic number.

It is an amenable number.

740561361 is a deficient number, since it is larger than the sum of its proper divisors (305699439).

740561361 is a wasteful number, since it uses less digits than its factorization.

740561361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10608.

The product of its (nonzero) digits is 15120, while the sum is 33.

The square root of 740561361 is about 27213.2570817975. The cubic root of 740561361 is about 904.7328295727.

The spelling of 740561361 in words is "seven hundred forty million, five hundred sixty-one thousand, three hundred sixty-one".