69101990 has 16 divisors (see below), whose sum is σ = 124658352. Its totient is φ = 27579744.

The previous prime is 69101987. The next prime is 69102013. The reversal of 69101990 is 9910196.

It is a self number, because there is not a number n which added to its sum of digits gives 69101990.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 2729 + ... + 12068.

It is an arithmetic number, because the mean of its divisors is an integer number (7791147).

Almost surely, 2^69101990 is an apocalyptic number.

69101990 is a deficient number, since it is larger than the sum of its proper divisors (55556362).

69101990 is a wasteful number, since it uses less digits than its factorization.

69101990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15271.

The product of its (nonzero) digits is 4374, while the sum is 35.

The square root of 69101990 is about 8312.7606726045. The cubic root of 69101990 is about 410.3585798158.

The spelling of 69101990 in words is "sixty-nine million, one hundred one thousand, nine hundred ninety".