69690390 has 64 divisors (see below), whose sum is σ = 208535040. Its totient is φ = 14480640.

The previous prime is 69690373. The next prime is 69690407. The reversal of 69690390 is 9309696.

It is an interprime number because it is at equal distance from previous prime (69690373) and next prime (69690407).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12775 + ... + 17394.

It is an arithmetic number, because the mean of its divisors is an integer number (3258360).

Almost surely, 2^69690390 is an apocalyptic number.

69690390 is an abundant number, since it is smaller than the sum of its proper divisors (138844650).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

69690390 is a wasteful number, since it uses less digits than its factorization.

69690390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30197.

The product of its (nonzero) digits is 78732, while the sum is 42.

The square root of 69690390 is about 8348.0770240817. The cubic root of 69690390 is about 411.5200171169.

The spelling of 69690390 in words is "sixty-nine million, six hundred ninety thousand, three hundred ninety".