738662649 has 4 divisors (see below), whose sum is σ = 984883536. Its totient is φ = 492441764.

The previous prime is 738662647. The next prime is 738662657. The reversal of 738662649 is 946266837.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 738662649 - 2¹ = 738662647 is a prime.

It is not an unprimeable number, because it can be changed into a prime (738662647) 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, 123110439 + ... + 123110444.

It is an arithmetic number, because the mean of its divisors is an integer number (246220884).

Almost surely, 2^738662649 is an apocalyptic number.

It is an amenable number.

738662649 is a deficient number, since it is larger than the sum of its proper divisors (246220887).

738662649 is a wasteful number, since it uses less digits than its factorization.

738662649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246220886.

The product of its digits is 2612736, while the sum is 51.

The square root of 738662649 is about 27178.3489012854. The cubic root of 738662649 is about 903.9589583953.

The spelling of 738662649 in words is "seven hundred thirty-eight million, six hundred sixty-two thousand, six hundred forty-nine".