646539034 has 8 divisors (see below), whose sum is σ = 979224480. Its totient is φ = 320130876.

The previous prime is 646539029. The next prime is 646539037. The reversal of 646539034 is 430935646.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (646539037) 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, 1569064 + ... + 1569475.

It is an arithmetic number, because the mean of its divisors is an integer number (122403060).

Almost surely, 2^646539034 is an apocalyptic number.

646539034 is a deficient number, since it is larger than the sum of its proper divisors (332685446).

646539034 is a wasteful number, since it uses less digits than its factorization.

646539034 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3138644.

The product of its (nonzero) digits is 233280, while the sum is 40.

The square root of 646539034 is about 25427.1318476937. The cubic root of 646539034 is about 864.6989202415.

The spelling of 646539034 in words is "six hundred forty-six million, five hundred thirty-nine thousand, thirty-four".