2572821670 has 16 divisors (see below), whose sum is σ = 4638118320. Its totient is φ = 1027564384.

The previous prime is 2572821661. The next prime is 2572821679. The reversal of 2572821670 is 761282752.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (2572821661) and next prime (2572821679).

It is a super-2 number, since 2×2572821670² = 13238822691243177800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2572821679) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 188617 + ... + 201796.

It is an arithmetic number, because the mean of its divisors is an integer number (289882395).

Almost surely, 2^2572821670 is an apocalyptic number.

2572821670 is a deficient number, since it is larger than the sum of its proper divisors (2065296650).

2572821670 is a wasteful number, since it uses less digits than its factorization.

2572821670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 391079.

The product of its (nonzero) digits is 94080, while the sum is 40.

The square root of 2572821670 is about 50722.9895609476. The cubic root of 2572821670 is about 1370.2607829347.

The spelling of 2572821670 in words is "two billion, five hundred seventy-two million, eight hundred twenty-one thousand, six hundred seventy".