1256670070 has 16 divisors (see below), whose sum is σ = 2381059440. Its totient is φ = 476211744.

The previous prime is 1256670029. The next prime is 1256670083. The reversal of 1256670070 is 700766521.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3306837 + ... + 3307216.

It is an arithmetic number, because the mean of its divisors is an integer number (148816215).

Almost surely, 2^1256670070 is an apocalyptic number.

1256670070 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1256670070 is a deficient number, since it is larger than the sum of its proper divisors (1124389370).

1256670070 is a wasteful number, since it uses less digits than its factorization.

1256670070 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6614079.

The product of its (nonzero) digits is 17640, while the sum is 34.

The square root of 1256670070 is about 35449.5425922536. The cubic root of 1256670070 is about 1079.1299777598.

The spelling of 1256670070 in words is "one billion, two hundred fifty-six million, six hundred seventy thousand, seventy".