2897320642 has 8 divisors (see below), whose sum is σ = 4601626956. Its totient is φ = 1363444992.

The previous prime is 2897320639. The next prime is 2897320663. The reversal of 2897320642 is 2460237982.

It can be written as a sum of positive squares in 2 ways, for example, as 2664727641 + 232593001 = 51621^2 + 15251^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42607623 + ... + 42607690.

Almost surely, 2^2897320642 is an apocalyptic number.

2897320642 is a deficient number, since it is larger than the sum of its proper divisors (1704306314).

2897320642 is a wasteful number, since it uses less digits than its factorization.

2897320642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85215332.

The product of its (nonzero) digits is 290304, while the sum is 43.

The square root of 2897320642 is about 53826.7651080761. The cubic root of 2897320642 is about 1425.6038301948.

The spelling of 2897320642 in words is "two billion, eight hundred ninety-seven million, three hundred twenty thousand, six hundred forty-two".