78532069 has 16 divisors (see below), whose sum is σ = 98130816. Its totient is φ = 61056000.

The previous prime is 78532049. The next prime is 78532109. The reversal of 78532069 is 96023587.

It is a cyclic number.

It is not a de Polignac number, because 78532069 - 2¹⁵ = 78499301 is a prime.

It is a super-2 number, since 2×78532069² = 12334571722841522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78532039) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45429 + ... + 47125.

It is an arithmetic number, because the mean of its divisors is an integer number (6133176).

Almost surely, 2^78532069 is an apocalyptic number.

It is an amenable number.

78532069 is a deficient number, since it is larger than the sum of its proper divisors (19598747).

78532069 is a wasteful number, since it uses less digits than its factorization.

78532069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2316.

The product of its (nonzero) digits is 90720, while the sum is 40.

The square root of 78532069 is about 8861.8321469096. The cubic root of 78532069 is about 428.2351842353.

The spelling of 78532069 in words is "seventy-eight million, five hundred thirty-two thousand, sixty-nine".