7740045 has 12 divisors (see below), whose sum is σ = 13416156. Its totient is φ = 4128000.

The previous prime is 7740037. The next prime is 7740077. The reversal of 7740045 is 5400477.

It can be written as a sum of positive squares in 2 ways, for example, as 2996361 + 4743684 = 1731^2 + 2178^2 .

It is not a de Polignac number, because 7740045 - 2³ = 7740037 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 85956 + ... + 86045.

It is an arithmetic number, because the mean of its divisors is an integer number (1118013).

Almost surely, 2^7740045 is an apocalyptic number.

It is an amenable number.

7740045 is a deficient number, since it is larger than the sum of its proper divisors (5676111).

7740045 is a wasteful number, since it uses less digits than its factorization.

7740045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172012 (or 172009 counting only the distinct ones).

The product of its (nonzero) digits is 3920, while the sum is 27.

The square root of 7740045 is about 2782.0936360949. The cubic root of 7740045 is about 197.8098112510.

The spelling of 7740045 in words is "seven million, seven hundred forty thousand, forty-five".