742005649 has 8 divisors (see below), whose sum is σ = 925098048. Its totient is φ = 578186160.

The previous prime is 742005643. The next prime is 742005661. The reversal of 742005649 is 946500247.

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

It is a cyclic number.

It is not a de Polignac number, because 742005649 - 2⁵ = 742005617 is a prime.

It is a super-2 number, since 2×742005649² = 1101144766295822402, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (742005643) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4818142 + ... + 4818295.

It is an arithmetic number, because the mean of its divisors is an integer number (115637256).

Almost surely, 2^742005649 is an apocalyptic number.

It is an amenable number.

742005649 is a deficient number, since it is larger than the sum of its proper divisors (183092399).

742005649 is a wasteful number, since it uses less digits than its factorization.

742005649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9636455.

The product of its (nonzero) digits is 60480, while the sum is 37.

The square root of 742005649 is about 27239.7806342122. The cubic root of 742005649 is about 905.3206027096.

The spelling of 742005649 in words is "seven hundred forty-two million, five thousand, six hundred forty-nine".