276397997 has 8 divisors (see below), whose sum is σ = 291533760. Its totient is φ = 261321120.

The previous prime is 276397993. The next prime is 276397999. The reversal of 276397997 is 799793672.

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 276397997 - 2² = 276397993 is a prime.

It is a super-2 number, since 2×276397997² = 152791705491224018, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (276397993) 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, 4904 + ... + 24017.

It is an arithmetic number, because the mean of its divisors is an integer number (36441720).

Almost surely, 2^276397997 is an apocalyptic number.

It is an amenable number.

276397997 is a deficient number, since it is larger than the sum of its proper divisors (15135763).

276397997 is a wasteful number, since it uses less digits than its factorization.

276397997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29443.

The product of its digits is 9001692, while the sum is 59.

The square root of 276397997 is about 16625.2217128073. The cubic root of 276397997 is about 651.3958146732.

The spelling of 276397997 in words is "two hundred seventy-six million, three hundred ninety-seven thousand, nine hundred ninety-seven".