690753949 has 8 divisors (see below), whose sum is σ = 727738880. Its totient is φ = 653832000.

The previous prime is 690753923. The next prime is 690753953. The reversal of 690753949 is 949357096.

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

It is a cyclic number.

It is not a de Polignac number, because 690753949 - 2¹⁵ = 690721181 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 690753896 and 690753905.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (690753149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7684 + ... + 37954.

It is an arithmetic number, because the mean of its divisors is an integer number (90967360).

Almost surely, 2^690753949 is an apocalyptic number.

It is an amenable number.

690753949 is a deficient number, since it is larger than the sum of its proper divisors (36984931).

690753949 is a wasteful number, since it uses less digits than its factorization.

690753949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31491.

The product of its (nonzero) digits is 1837080, while the sum is 52.

The square root of 690753949 is about 26282.1983289070. The cubic root of 690753949 is about 883.9773259303.

The spelling of 690753949 in words is "six hundred ninety million, seven hundred fifty-three thousand, nine hundred forty-nine".