69880146 has 16 divisors (see below), whose sum is σ = 159726144. Its totient is φ = 19965744.

The previous prime is 69880133. The next prime is 69880147. The reversal of 69880146 is 64108896.

It is a Harshad number since it is a multiple of its sum of digits (42), and also a Moran number because the ratio is a prime number: 1663813 = 69880146 / (6 + 9 + 8 + 8 + 0 + 1 + 4 + 6).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 69880098 and 69880107.

It is not an unprimeable number, because it can be changed into a prime (69880147) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 831865 + ... + 831948.

It is an arithmetic number, because the mean of its divisors is an integer number (9982884).

Almost surely, 2^69880146 is an apocalyptic number.

69880146 is an abundant number, since it is smaller than the sum of its proper divisors (89845998).

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

69880146 is a wasteful number, since it uses less digits than its factorization.

69880146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1663825.

The product of its (nonzero) digits is 82944, while the sum is 42.

The square root of 69880146 is about 8359.4345502552. The cubic root of 69880146 is about 411.8931801180.

The spelling of 69880146 in words is "sixty-nine million, eight hundred eighty thousand, one hundred forty-six".