2775649397 has 8 divisors (see below), whose sum is σ = 2833959744. Its totient is φ = 2717931328.

The previous prime is 2775649337. The next prime is 2775649399. The reversal of 2775649397 is 7939465772.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2775649397 - 2¹⁴ = 2775633013 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2775649399) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 138593 + ... + 157350.

It is an arithmetic number, because the mean of its divisors is an integer number (354244968).

Almost surely, 2^2775649397 is an apocalyptic number.

It is an amenable number.

2775649397 is a deficient number, since it is larger than the sum of its proper divisors (58310347).

2775649397 is a wasteful number, since it uses less digits than its factorization.

2775649397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 296139.

The product of its digits is 20003760, while the sum is 59.

The square root of 2775649397 is about 52684.4322072470. The cubic root of 2775649397 is about 1405.3619879247.

The spelling of 2775649397 in words is "two billion, seven hundred seventy-five million, six hundred forty-nine thousand, three hundred ninety-seven".