2646420465 has 16 divisors (see below), whose sum is σ = 4559986368. Its totient is φ = 1302853056.

The previous prime is 2646420463. The next prime is 2646420467. The reversal of 2646420465 is 5640246462.

It is an interprime number because it is at equal distance from previous prime (2646420463) and next prime (2646420467).

It is not a de Polignac number, because 2646420465 - 2¹ = 2646420463 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (2646420463) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6785499 + ... + 6785888.

It is an arithmetic number, because the mean of its divisors is an integer number (284999148).

Almost surely, 2^2646420465 is an apocalyptic number.

It is an amenable number.

2646420465 is a deficient number, since it is larger than the sum of its proper divisors (1913565903).

2646420465 is a wasteful number, since it uses less digits than its factorization.

2646420465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13571408.

The product of its (nonzero) digits is 276480, while the sum is 39.

The square root of 2646420465 is about 51443.3714388939. The cubic root of 2646420465 is about 1383.2041462881.

The spelling of 2646420465 in words is "two billion, six hundred forty-six million, four hundred twenty thousand, four hundred sixty-five".