747649641 has 32 divisors (see below), whose sum is σ = 1036893312. Its totient is φ = 478932480.

The previous prime is 747649627. The next prime is 747649657. The reversal of 747649641 is 146946747.

It is not a de Polignac number, because 747649641 - 2⁶ = 747649577 is a prime.

It is not an unprimeable number, because it can be changed into a prime (747641641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2388501 + ... + 2388813.

It is an arithmetic number, because the mean of its divisors is an integer number (32402916).

Almost surely, 2^747649641 is an apocalyptic number.

It is an amenable number.

747649641 is a deficient number, since it is larger than the sum of its proper divisors (289243671).

747649641 is a wasteful number, since it uses less digits than its factorization.

747649641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 633.

The product of its digits is 1016064, while the sum is 48.

The square root of 747649641 is about 27343.1827152583. The cubic root of 747649641 is about 907.6102175478.

The spelling of 747649641 in words is "seven hundred forty-seven million, six hundred forty-nine thousand, six hundred forty-one".