690769390 has 8 divisors (see below), whose sum is σ = 1243384920. Its totient is φ = 276307752.

The previous prime is 690769379. The next prime is 690769393. The reversal of 690769390 is 93967096.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (690769393) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34538460 + ... + 34538479.

It is an arithmetic number, because the mean of its divisors is an integer number (155423115).

Almost surely, 2^690769390 is an apocalyptic number.

690769390 is a deficient number, since it is larger than the sum of its proper divisors (552615530).

690769390 is a wasteful number, since it uses less digits than its factorization.

690769390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69076946.

The product of its (nonzero) digits is 551124, while the sum is 49.

The square root of 690769390 is about 26282.4920812316. The cubic root of 690769390 is about 883.9839126424.

The spelling of 690769390 in words is "six hundred ninety million, seven hundred sixty-nine thousand, three hundred ninety".