2620722755 has 16 divisors (see below), whose sum is σ = 3647781120. Its totient is φ = 1770243552.

The previous prime is 2620722749. The next prime is 2620722823. The reversal of 2620722755 is 5572270262.

It is not a de Polignac number, because 2620722755 - 2¹⁸ = 2620460611 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 556445 + ... + 561134.

It is an arithmetic number, because the mean of its divisors is an integer number (227986320).

Almost surely, 2^2620722755 is an apocalyptic number.

2620722755 is a deficient number, since it is larger than the sum of its proper divisors (1027058365).

2620722755 is a wasteful number, since it uses less digits than its factorization.

2620722755 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1117658.

The product of its (nonzero) digits is 117600, while the sum is 38.

The square root of 2620722755 is about 51192.9951751214. The cubic root of 2620722755 is about 1378.7124367716.

The spelling of 2620722755 in words is "two billion, six hundred twenty million, seven hundred twenty-two thousand, seven hundred fifty-five".