276742646 has 4 divisors (see below), whose sum is σ = 415113972. Its totient is φ = 138371322.

The previous prime is 276742637. The next prime is 276742651. The reversal of 276742646 is 646247672.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 276742597 and 276742606.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69185660 + ... + 69185663.

It is an arithmetic number, because the mean of its divisors is an integer number (103778493).

Almost surely, 2^276742646 is an apocalyptic number.

276742646 is a deficient number, since it is larger than the sum of its proper divisors (138371326).

276742646 is a wasteful number, since it uses less digits than its factorization.

276742646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138371325.

The product of its digits is 677376, while the sum is 44.

The square root of 276742646 is about 16635.5837288627. The cubic root of 276742646 is about 651.6664505799. Note that the first 3 decimals are identical.

The spelling of 276742646 in words is "two hundred seventy-six million, seven hundred forty-two thousand, six hundred forty-six".