69491642 has 16 divisors (see below), whose sum is σ = 114760800. Its totient is φ = 31296240.

The previous prime is 69491633. The next prime is 69491647. The reversal of 69491642 is 24619496.

It is a self number, because there is not a number n which added to its sum of digits gives 69491642.

It is not an unprimeable number, because it can be changed into a prime (69491647) 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 7 ways as a sum of consecutive naturals, for example, 12092 + ... + 16887.

It is an arithmetic number, because the mean of its divisors is an integer number (7172550).

Almost surely, 2^69491642 is an apocalyptic number.

69491642 is a deficient number, since it is larger than the sum of its proper divisors (45269158).

69491642 is a wasteful number, since it uses less digits than its factorization.

69491642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29101.

The product of its digits is 93312, while the sum is 41.

The square root of 69491642 is about 8336.1647056665. The cubic root of 69491642 is about 411.1284439788.

The spelling of 69491642 in words is "sixty-nine million, four hundred ninety-one thousand, six hundred forty-two".