746606646 has 120 divisors (see below), whose sum is σ = 1829415456. Its totient is φ = 227370240.

The previous prime is 746606621. The next prime is 746606647. The reversal of 746606646 is 646606647.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (746606647) by changing a digit.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 1732051 + ... + 1732481.

Almost surely, 2^746606646 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 746606646, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (914707728).

746606646 is an abundant number, since it is smaller than the sum of its proper divisors (1082808810).

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

746606646 is a wasteful number, since it uses less digits than its factorization.

746606646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 516 (or 490 counting only the distinct ones).

The product of its (nonzero) digits is 870912, while the sum is 45.

The square root of 746606646 is about 27324.1037547437. The cubic root of 746606646 is about 907.1879727766.

Subtracting from 746606646 its reverse (646606647), we obtain a palindrome (99999999).

The spelling of 746606646 in words is "seven hundred forty-six million, six hundred six thousand, six hundred forty-six".