749950666 has 4 divisors (see below), whose sum is σ = 1124926002. Its totient is φ = 374975332.

The previous prime is 749950637. The next prime is 749950697. The reversal of 749950666 is 666059947.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 666059947 = 7 ⋅95151421.

It can be written as a sum of positive squares in only one way, i.e., 735548641 + 14402025 = 27121^2 + 3795^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 187487665 + ... + 187487668.

Almost surely, 2^749950666 is an apocalyptic number.

749950666 is a deficient number, since it is larger than the sum of its proper divisors (374975336).

749950666 is a wasteful number, since it uses less digits than its factorization.

749950666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 374975335.

The product of its (nonzero) digits is 2449440, while the sum is 52.

The square root of 749950666 is about 27385.2271489575. The cubic root of 749950666 is about 908.5403746843.

The spelling of 749950666 in words is "seven hundred forty-nine million, nine hundred fifty thousand, six hundred sixty-six".