649651070 has 8 divisors (see below), whose sum is σ = 1169371944. Its totient is φ = 259860424.

The previous prime is 649651033. The next prime is 649651081. The reversal of 649651070 is 70156946.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32482544 + ... + 32482563.

It is an arithmetic number, because the mean of its divisors is an integer number (146171493).

Almost surely, 2^649651070 is an apocalyptic number.

649651070 is a deficient number, since it is larger than the sum of its proper divisors (519720874).

649651070 is a wasteful number, since it uses less digits than its factorization.

649651070 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64965114.

The product of its (nonzero) digits is 45360, while the sum is 38.

The square root of 649651070 is about 25488.2535690463. The cubic root of 649651070 is about 866.0840741037.

The spelling of 649651070 in words is "six hundred forty-nine million, six hundred fifty-one thousand, seventy".