2685400738 has 8 divisors (see below), whose sum is σ = 4073360940. Its totient is φ = 1327613760.

The previous prime is 2685400723. The next prime is 2685400787. The reversal of 2685400738 is 8370045862.

It can be written as a sum of positive squares in 2 ways, for example, as 2643707889 + 41692849 = 51417^2 + 6457^2 .

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

It is a super-2 number, since 2×2685400738² = 14422754247301889288, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2685400694 and 2685400703.

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, 7543083 + ... + 7543438.

Almost surely, 2^2685400738 is an apocalyptic number.

2685400738 is a deficient number, since it is larger than the sum of its proper divisors (1387960202).

2685400738 is a wasteful number, since it uses less digits than its factorization.

2685400738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15086612.

The product of its (nonzero) digits is 322560, while the sum is 43.

The square root of 2685400738 is about 51820.8523472936. The cubic root of 2685400738 is about 1389.9623435790.

The spelling of 2685400738 in words is "two billion, six hundred eighty-five million, four hundred thousand, seven hundred thirty-eight".