6690372754 has 8 divisors (see below), whose sum is σ = 10807525260. Its totient is φ = 3087864336.

The previous prime is 6690372749. The next prime is 6690372769. The reversal of 6690372754 is 4572730966.

It can be written as a sum of positive squares in 2 ways, for example, as 6197310729 + 493062025 = 78723^2 + 22205^2 .

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

It is a super-2 number, since 2×6690372754² = 89522175174931089032, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 6690372698 and 6690372707.

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, 128660989 + ... + 128661040.

Almost surely, 2^6690372754 is an apocalyptic number.

6690372754 is a deficient number, since it is larger than the sum of its proper divisors (4117152506).

6690372754 is a wasteful number, since it uses less digits than its factorization.

6690372754 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 257322044.

The product of its (nonzero) digits is 1905120, while the sum is 49.

The square root of 6690372754 is about 81794.6988135539. The cubic root of 6690372754 is about 1884.3002469914.

The spelling of 6690372754 in words is "six billion, six hundred ninety million, three hundred seventy-two thousand, seven hundred fifty-four".