7420764553 has 8 divisors (see below), whose sum is σ = 7508919240. Its totient is φ = 7332716160.

The previous prime is 7420764541. The next prime is 7420764577. The reversal of 7420764553 is 3554670247.

It can be written as a sum of positive squares in 4 ways, for example, as 2914596169 + 4506168384 = 53987^2 + 67128^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 7420764553 - 2⁵ = 7420764521 is a prime.

It is a super-2 number, since 2×7420764553² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7420764523) 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, 118551 + ... + 169987.

It is an arithmetic number, because the mean of its divisors is an integer number (938614905).

Almost surely, 2^7420764553 is an apocalyptic number.

It is an amenable number.

7420764553 is a deficient number, since it is larger than the sum of its proper divisors (88154687).

7420764553 is a wasteful number, since it uses less digits than its factorization.

7420764553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53147.

The product of its (nonzero) digits is 705600, while the sum is 43.

The square root of 7420764553 is about 86143.8596360762. The cubic root of 7420764553 is about 1950.5161511595.

The spelling of 7420764553 in words is "seven billion, four hundred twenty million, seven hundred sixty-four thousand, five hundred fifty-three".