70819957 has 6 divisors (see below), whose sum is σ = 76686882. Its totient is φ = 65372112.

The previous prime is 70819949. The next prime is 70819979. The reversal of 70819957 is 75991807.

It can be written as a sum of positive squares in 3 ways, for example, as 4901796 + 65918161 = 2214^2 + 8119^2 .

It is not a de Polignac number, because 70819957 - 2³ = 70819949 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70819937) 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 5 ways as a sum of consecutive naturals, for example, 209358 + ... + 209695.

It is an arithmetic number, because the mean of its divisors is an integer number (12781147).

Almost surely, 2^70819957 is an apocalyptic number.

It is an amenable number.

70819957 is a deficient number, since it is larger than the sum of its proper divisors (5866925).

70819957 is a wasteful number, since it uses less digits than its factorization.

70819957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 419079 (or 419066 counting only the distinct ones).

The product of its (nonzero) digits is 158760, while the sum is 46.

The square root of 70819957 is about 8415.4594051662. The cubic root of 70819957 is about 413.7314668150.

The spelling of 70819957 in words is "seventy million, eight hundred nineteen thousand, nine hundred fifty-seven".