690352415 has 4 divisors (see below), whose sum is σ = 828422904. Its totient is φ = 552281928.

The previous prime is 690352387. The next prime is 690352447. The reversal of 690352415 is 514253096.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 690352415 - 2¹² = 690348319 is a prime.

It is a Duffinian number.

It is a congruent number.

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, 69035237 + ... + 69035246.

It is an arithmetic number, because the mean of its divisors is an integer number (207105726).

Almost surely, 2^690352415 is an apocalyptic number.

690352415 is a deficient number, since it is larger than the sum of its proper divisors (138070489).

690352415 is a wasteful number, since it uses less digits than its factorization.

690352415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138070488.

The product of its (nonzero) digits is 32400, while the sum is 35.

The square root of 690352415 is about 26274.5583216921. The cubic root of 690352415 is about 883.8060079325.

The spelling of 690352415 in words is "six hundred ninety million, three hundred fifty-two thousand, four hundred fifteen".