70978625 has 8 divisors (see below), whose sum is σ = 88581480. Its totient is φ = 56782800.

The previous prime is 70978619. The next prime is 70978637. The reversal of 70978625 is 52687907.

It can be written as a sum of positive squares in 4 ways, for example, as 485809 + 70492816 = 697^2 + 8396^2 .

It is not a de Polignac number, because 70978625 - 2¹² = 70974529 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 283790 + ... + 284039.

It is an arithmetic number, because the mean of its divisors is an integer number (11072685).

Almost surely, 2^70978625 is an apocalyptic number.

It is an amenable number.

70978625 is a deficient number, since it is larger than the sum of its proper divisors (17602855).

70978625 is an equidigital number, since it uses as much as digits as its factorization.

70978625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 567844 (or 567834 counting only the distinct ones).

The product of its (nonzero) digits is 211680, while the sum is 44.

The square root of 70978625 is about 8424.8813048019. The cubic root of 70978625 is about 414.0402167906.

The spelling of 70978625 in words is "seventy million, nine hundred seventy-eight thousand, six hundred twenty-five".