766206542 has 4 divisors (see below), whose sum is σ = 1149309816. Its totient is φ = 383103270.

The previous prime is 766206533. The next prime is 766206547. The reversal of 766206542 is 245602667.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 245602667 = 3571 ⋅68777.

It is a junction number, because it is equal to n+sod(n) for n = 766206496 and 766206505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (766206547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 191551634 + ... + 191551637.

It is an arithmetic number, because the mean of its divisors is an integer number (287327454).

Almost surely, 2^766206542 is an apocalyptic number.

766206542 is a deficient number, since it is larger than the sum of its proper divisors (383103274).

766206542 is a wasteful number, since it uses less digits than its factorization.

766206542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 383103273.

The product of its (nonzero) digits is 120960, while the sum is 38.

The square root of 766206542 is about 27680.4360876053. The cubic root of 766206542 is about 915.0579922833.

The spelling of 766206542 in words is "seven hundred sixty-six million, two hundred six thousand, five hundred forty-two".