690245306 has 8 divisors (see below), whose sum is σ = 1035541344. Its totient is φ = 345064860.

The previous prime is 690245293. The next prime is 690245359. The reversal of 690245306 is 603542096.

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

It is a super-3 number, since 3×690245306³ (a number of 27 digits) contains 333 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, 11990 + ... + 39041.

It is an arithmetic number, because the mean of its divisors is an integer number (129442668).

Almost surely, 2^690245306 is an apocalyptic number.

690245306 is a deficient number, since it is larger than the sum of its proper divisors (345296038).

690245306 is a wasteful number, since it uses less digits than its factorization.

690245306 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57796.

The product of its (nonzero) digits is 38880, while the sum is 35.

The square root of 690245306 is about 26272.5199781064. The cubic root of 690245306 is about 883.7602977166.

The spelling of 690245306 in words is "six hundred ninety million, two hundred forty-five thousand, three hundred six".