275078649 has 16 divisors (see below), whose sum is σ = 389126592. Its totient is φ = 172251648.

The previous prime is 275078623. The next prime is 275078729. The reversal of 275078649 is 946870572.

It is not a de Polignac number, because 275078649 - 2¹³ = 275070457 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 275078598 and 275078607.

It is not an unprimeable number, because it can be changed into a prime (275078249) 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, 21517 + ... + 31829.

It is an arithmetic number, because the mean of its divisors is an integer number (24320412).

Almost surely, 2^275078649 is an apocalyptic number.

It is an amenable number.

275078649 is a deficient number, since it is larger than the sum of its proper divisors (114047943).

275078649 is a wasteful number, since it uses less digits than its factorization.

275078649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10856.

The product of its (nonzero) digits is 846720, while the sum is 48.

The square root of 275078649 is about 16585.4951388254. The cubic root of 275078649 is about 650.3577115873.

The spelling of 275078649 in words is "two hundred seventy-five million, seventy-eight thousand, six hundred forty-nine".