69078690 has 32 divisors (see below), whose sum is σ = 184210560. Its totient is φ = 18420912.

The previous prime is 69078689. The next prime is 69078697. The reversal of 69078690 is 9687096.

It is a super-2 number, since 2×69078690² = 9543730824232200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (69078697) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 127654 + ... + 128193.

It is an arithmetic number, because the mean of its divisors is an integer number (5756580).

Almost surely, 2^69078690 is an apocalyptic number.

69078690 is an abundant number, since it is smaller than the sum of its proper divisors (115131870).

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

69078690 is a wasteful number, since it uses less digits than its factorization.

69078690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255863 (or 255857 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 45.

The square root of 69078690 is about 8311.3590946367. The cubic root of 69078690 is about 410.3124526843.

The spelling of 69078690 in words is "sixty-nine million, seventy-eight thousand, six hundred ninety".