690575747 has 8 divisors (see below), whose sum is σ = 728020992. Its totient is φ = 654078600.

The previous prime is 690575731. The next prime is 690575771. The reversal of 690575747 is 747575096.

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 690575747 - 2⁴ = 690575731 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 690575695 and 690575704.

It is not an unprimeable number, because it can be changed into a prime (690575777) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 235529 + ... + 238442.

It is an arithmetic number, because the mean of its divisors is an integer number (91002624).

Almost surely, 2^690575747 is an apocalyptic number.

690575747 is a deficient number, since it is larger than the sum of its proper divisors (37445245).

690575747 is a wasteful number, since it uses less digits than its factorization.

690575747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 474049.

The product of its (nonzero) digits is 1852200, while the sum is 50.

The square root of 690575747 is about 26278.8079448060. The cubic root of 690575747 is about 883.9013026826.

The spelling of 690575747 in words is "six hundred ninety million, five hundred seventy-five thousand, seven hundred forty-seven".