70451689 has 32 divisors (see below), whose sum is σ = 94058496. Its totient is φ = 51083520.

The previous prime is 70451671. The next prime is 70451699. The reversal of 70451689 is 98615407.

It is a cyclic number.

It is not a de Polignac number, because 70451689 - 2⁵ = 70451657 is a prime.

It is not an unprimeable number, because it can be changed into a prime (70451609) 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 31 ways as a sum of consecutive naturals, for example, 139812 + ... + 140314.

It is an arithmetic number, because the mean of its divisors is an integer number (2939328).

Almost surely, 2^70451689 is an apocalyptic number.

It is an amenable number.

70451689 is a deficient number, since it is larger than the sum of its proper divisors (23606807).

70451689 is a wasteful number, since it uses less digits than its factorization.

70451689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 645.

The product of its (nonzero) digits is 60480, while the sum is 40.

The square root of 70451689 is about 8393.5504406657. The cubic root of 70451689 is about 413.0130773824.

The spelling of 70451689 in words is "seventy million, four hundred fifty-one thousand, six hundred eighty-nine".