70099081 has 16 divisors (see below), whose sum is σ = 77172480. Its totient is φ = 63282240.

The previous prime is 70099079. The next prime is 70099097. The reversal of 70099081 is 18099007.

It is a cyclic number.

It is not a de Polignac number, because 70099081 - 2¹ = 70099079 is a prime.

It is a super-3 number, since 3×70099081³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70099031) 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, 159460 + ... + 159898.

It is an arithmetic number, because the mean of its divisors is an integer number (4823280).

Almost surely, 2^70099081 is an apocalyptic number.

70099081 is a gapful number since it is divisible by the number (71) formed by its first and last digit.

It is an amenable number.

70099081 is a deficient number, since it is larger than the sum of its proper divisors (7073399).

70099081 is a wasteful number, since it uses less digits than its factorization.

70099081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 696.

The product of its (nonzero) digits is 4536, while the sum is 34.

The square root of 70099081 is about 8372.5193938264. The cubic root of 70099081 is about 412.3228864375.

The spelling of 70099081 in words is "seventy million, ninety-nine thousand, eighty-one".