690923151 has 24 divisors (see below), whose sum is σ = 1044501120. Its totient is φ = 439273296.

The previous prime is 690923147. The next prime is 690923153. The reversal of 690923151 is 151329096.

It is not a de Polignac number, because 690923151 - 2² = 690923147 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (690923153) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 67020 + ... + 76638.

It is an arithmetic number, because the mean of its divisors is an integer number (43520880).

Almost surely, 2^690923151 is an apocalyptic number.

690923151 is a deficient number, since it is larger than the sum of its proper divisors (353577969).

690923151 is a wasteful number, since it uses less digits than its factorization.

690923151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9995 (or 9992 counting only the distinct ones).

The product of its (nonzero) digits is 14580, while the sum is 36.

The square root of 690923151 is about 26285.4170786769. The cubic root of 690923151 is about 884.0494975629.

The spelling of 690923151 in words is "six hundred ninety million, nine hundred twenty-three thousand, one hundred fifty-one".