690418378353 has 16 divisors (see below), whose sum is σ = 1057099910400. Its totient is φ = 396412465680.

The previous prime is 690418378339. The next prime is 690418378361. The reversal of 690418378353 is 353873814096.

It is not a de Polignac number, because 690418378353 - 2⁴ = 690418378337 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a junction number, because it is equal to n+sod(n) for n = 690418378293 and 690418378302.

It is not an unprimeable number, because it can be changed into a prime (690418371353) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 550572243 + ... + 550573496.

It is an arithmetic number, because the mean of its divisors is an integer number (66068744400).

Almost surely, 2^690418378353 is an apocalyptic number.

It is an amenable number.

690418378353 is a deficient number, since it is larger than the sum of its proper divisors (366681532047).

690418378353 is a wasteful number, since it uses less digits than its factorization.

690418378353 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1101145772.

The product of its (nonzero) digits is 13063680, while the sum is 57.

The spelling of 690418378353 in words is "six hundred ninety billion, four hundred eighteen million, three hundred seventy-eight thousand, three hundred fifty-three".