2420756681 has 16 divisors (see below), whose sum is σ = 2832918528. Its totient is φ = 2025248400.

The previous prime is 2420756677. The next prime is 2420756687. The reversal of 2420756681 is 1866570242.

It is not a de Polignac number, because 2420756681 - 2² = 2420756677 is a prime.

It is a super-2 number, since 2×2420756681² = 11720125817212271522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2420756687) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 802466 + ... + 805476.

It is an arithmetic number, because the mean of its divisors is an integer number (177057408).

Almost surely, 2^2420756681 is an apocalyptic number.

It is an amenable number.

2420756681 is a deficient number, since it is larger than the sum of its proper divisors (412161847).

2420756681 is a wasteful number, since it uses less digits than its factorization.

It is an anagram of its base 9 representation: 2420756681 = (6221064785)₉.

2420756681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5732.

The product of its (nonzero) digits is 161280, while the sum is 41.

The square root of 2420756681 is about 49201.1857682312. The cubic root of 2420756681 is about 1342.7146055693.

The spelling of 2420756681 in words is "two billion, four hundred twenty million, seven hundred fifty-six thousand, six hundred eighty-one".