7764061 has 4 divisors (see below), whose sum is σ = 7870492. Its totient is φ = 7657632.

The previous prime is 7764059. The next prime is 7764073. The reversal of 7764061 is 1604677.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1604677 = 151 ⋅10627.

It can be written as a sum of positive squares in 2 ways, for example, as 6661561 + 1102500 = 2581^2 + 1050^2 .

It is a cyclic number.

It is not a de Polignac number, because 7764061 - 2¹ = 7764059 is a prime.

It is an Ulam number.

It is a Duffinian number.

7764061 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7764011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53106 + ... + 53251.

It is an arithmetic number, because the mean of its divisors is an integer number (1967623).

Almost surely, 2^7764061 is an apocalyptic number.

It is an amenable number.

7764061 is a deficient number, since it is larger than the sum of its proper divisors (106431).

7764061 is a wasteful number, since it uses less digits than its factorization.

7764061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106430.

The product of its (nonzero) digits is 7056, while the sum is 31.

The square root of 7764061 is about 2786.4064671185. The cubic root of 7764061 is about 198.0141897119.

The spelling of 7764061 in words is "seven million, seven hundred sixty-four thousand, sixty-one".