690461501 has 16 divisors (see below), whose sum is σ = 748166400. Its totient is φ = 635169600.

The previous prime is 690461491. The next prime is 690461503. The reversal of 690461501 is 105164096.

It is a cyclic number.

It is not a de Polignac number, because 690461501 - 2²⁶ = 623352637 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (690461503) by changing a digit.

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 in 15 ways as a sum of consecutive naturals, for example, 87791 + ... + 95331.

It is an arithmetic number, because the mean of its divisors is an integer number (46760400).

Almost surely, 2^690461501 is an apocalyptic number.

690461501 is a gapful number since it is divisible by the number (61) formed by its first and last digit.

It is an amenable number.

690461501 is a deficient number, since it is larger than the sum of its proper divisors (57704899).

690461501 is a wasteful number, since it uses less digits than its factorization.

690461501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7700.

The product of its (nonzero) digits is 6480, while the sum is 32.

The square root of 690461501 is about 26276.6341261585. The cubic root of 690461501 is about 883.8525570005.

The spelling of 690461501 in words is "six hundred ninety million, four hundred sixty-one thousand, five hundred one".