690134255 has 8 divisors (see below), whose sum is σ = 829204992. Its totient is φ = 551411488.

The previous prime is 690134243. The next prime is 690134273. The reversal of 690134255 is 552431096.

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 690134255 - 2⁸ = 690133999 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 7 ways as a sum of consecutive naturals, for example, 82607 + ... + 90576.

It is an arithmetic number, because the mean of its divisors is an integer number (103650624).

Almost surely, 2^690134255 is an apocalyptic number.

690134255 is a deficient number, since it is larger than the sum of its proper divisors (139070737).

690134255 is a wasteful number, since it uses less digits than its factorization.

690134255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173985.

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

The square root of 690134255 is about 26270.4064490826. The cubic root of 690134255 is about 883.7129002056.

The spelling of 690134255 in words is "six hundred ninety million, one hundred thirty-four thousand, two hundred fifty-five".