646425762 has 32 divisors (see below), whose sum is σ = 1326024000. Its totient is φ = 209959680.

The previous prime is 646425761. The next prime is 646425797. The reversal of 646425762 is 267524646.

It is not an unprimeable number, because it can be changed into a prime (646425761) 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, 367878 + ... + 369630.

It is an arithmetic number, because the mean of its divisors is an integer number (41438250).

Almost surely, 2^646425762 is an apocalyptic number.

646425762 is an abundant number, since it is smaller than the sum of its proper divisors (679598238).

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

646425762 is a wasteful number, since it uses less digits than its factorization.

646425762 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3298.

The product of its digits is 483840, while the sum is 42.

The square root of 646425762 is about 25424.9043656018. The cubic root of 646425762 is about 864.6484196058.

The spelling of 646425762 in words is "six hundred forty-six million, four hundred twenty-five thousand, seven hundred sixty-two".