755720690 has 8 divisors (see below), whose sum is σ = 1360297260. Its totient is φ = 302288272.

The previous prime is 755720689. The next prime is 755720711. The reversal of 755720690 is 96027557.

755720690 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 718400809 + 37319881 = 26803^2 + 6109^2 .

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

It is a super-2 number, since 2×755720690² = 1142227522588152200, which contains 22 as substring.

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, 37786025 + ... + 37786044.

Almost surely, 2^755720690 is an apocalyptic number.

755720690 is a deficient number, since it is larger than the sum of its proper divisors (604576570).

755720690 is a wasteful number, since it uses less digits than its factorization.

755720690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75572076.

The product of its (nonzero) digits is 132300, while the sum is 41.

The square root of 755720690 is about 27490.3744972672. The cubic root of 755720690 is about 910.8644886343.

The spelling of 755720690 in words is "seven hundred fifty-five million, seven hundred twenty thousand, six hundred ninety".