2640329097 has 16 divisors (see below), whose sum is σ = 4026977280. Its totient is φ = 1507402512.

The previous prime is 2640329051. The next prime is 2640329101. The reversal of 2640329097 is 7909230462.

It is a happy number.

It is not a de Polignac number, because 2640329097 - 2⁷ = 2640328969 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2640321097) 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, 32397 + ... + 79562.

It is an arithmetic number, because the mean of its divisors is an integer number (251686080).

Almost surely, 2^2640329097 is an apocalyptic number.

It is an amenable number.

2640329097 is a deficient number, since it is larger than the sum of its proper divisors (1386648183).

2640329097 is a wasteful number, since it uses less digits than its factorization.

2640329097 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113092.

The product of its (nonzero) digits is 163296, while the sum is 42.

The square root of 2640329097 is about 51384.1327356996. The cubic root of 2640329097 is about 1382.1420728977.

The spelling of 2640329097 in words is "two billion, six hundred forty million, three hundred twenty-nine thousand, ninety-seven".