690785415 has 40 divisors (see below), whose sum is σ = 1242278928. Its totient is φ = 367234560.

The previous prime is 690785363. The next prime is 690785419. The reversal of 690785415 is 514587096.

It is not a de Polignac number, because 690785415 - 2¹¹ = 690783367 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (690785419) 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 39 ways as a sum of consecutive naturals, for example, 131479 + ... + 136631.

Almost surely, 2^690785415 is an apocalyptic number.

690785415 is a deficient number, since it is larger than the sum of its proper divisors (551493513).

690785415 is a wasteful number, since it uses less digits than its factorization.

690785415 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5501 (or 5492 counting only the distinct ones).

The product of its (nonzero) digits is 302400, while the sum is 45.

The square root of 690785415 is about 26282.7969402041. The cubic root of 690785415 is about 883.9907483693.

The spelling of 690785415 in words is "six hundred ninety million, seven hundred eighty-five thousand, four hundred fifteen".