775337642 has 4 divisors (see below), whose sum is σ = 1163006466. Its totient is φ = 387668820.

The previous prime is 775337623. The next prime is 775337653. The reversal of 775337642 is 246733577.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 246733577 = 349 ⋅706973.

It can be written as a sum of positive squares in only one way, i.e., 392000401 + 383337241 = 19799^2 + 19579^2 .

It is a super-2 number, since 2×775337642² = 1202296918204240328, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 775337593 and 775337602.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 193834409 + ... + 193834412.

Almost surely, 2^775337642 is an apocalyptic number.

775337642 is a deficient number, since it is larger than the sum of its proper divisors (387668824).

775337642 is a wasteful number, since it uses less digits than its factorization.

775337642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 387668823.

The product of its digits is 740880, while the sum is 44.

The square root of 775337642 is about 27844.8853831363. The cubic root of 775337642 is about 918.6786489578.

The spelling of 775337642 in words is "seven hundred seventy-five million, three hundred thirty-seven thousand, six hundred forty-two".