7766040 has 32 divisors (see below), whose sum is σ = 23298480. Its totient is φ = 2070912.

The previous prime is 7766039. The next prime is 7766053. The reversal of 7766040 is 406677.

It is a super-2 number, since 2×7766040² = 120622754563200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 7765989 and 7766007.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32239 + ... + 32478.

Almost surely, 2^7766040 is an apocalyptic number.

It is an amenable number.

7766040 is an abundant number, since it is smaller than the sum of its proper divisors (15532440).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7766040 is a wasteful number, since it uses less digits than its factorization.

7766040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64731 (or 64727 counting only the distinct ones).

The product of its (nonzero) digits is 7056, while the sum is 30.

The square root of 7766040 is about 2786.7615613827. The cubic root of 7766040 is about 198.0310123855.

The spelling of 7766040 in words is "seven million, seven hundred sixty-six thousand, forty".