88078781 has 8 divisors (see below), whose sum is σ = 103908864. Its totient is φ = 73060560.

The previous prime is 88078777. The next prime is 88078787. The reversal of 88078781 is 18787088.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 88078781 - 2² = 88078777 is a prime.

It is a super-2 number, since 2×88078781² = 15515743324891922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (88078787) 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, 202730 + ... + 203163.

It is an arithmetic number, because the mean of its divisors is an integer number (12988608).

Almost surely, 2^88078781 is an apocalyptic number.

It is an amenable number.

88078781 is a deficient number, since it is larger than the sum of its proper divisors (15830083).

88078781 is a wasteful number, since it uses less digits than its factorization.

88078781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 405931.

The product of its (nonzero) digits is 200704, while the sum is 47.

The square root of 88078781 is about 9385.0296216901. The cubic root of 88078781 is about 444.9287113846.

The spelling of 88078781 in words is "eighty-eight million, seventy-eight thousand, seven hundred eighty-one".