690522245 has 16 divisors (see below), whose sum is σ = 953280768. Its totient is φ = 470361600.

The previous prime is 690522229. The next prime is 690522299. The reversal of 690522245 is 542225096.

It is not a de Polignac number, because 690522245 - 2⁴ = 690522229 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 60044 + ... + 70613.

It is an arithmetic number, because the mean of its divisors is an integer number (59580048).

Almost surely, 2^690522245 is an apocalyptic number.

It is an amenable number.

690522245 is a deficient number, since it is larger than the sum of its proper divisors (262758523).

690522245 is a wasteful number, since it uses less digits than its factorization.

690522245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130820.

The product of its (nonzero) digits is 43200, while the sum is 35.

The square root of 690522245 is about 26277.7899565393. The cubic root of 690522245 is about 883.8784754938.

The spelling of 690522245 in words is "six hundred ninety million, five hundred twenty-two thousand, two hundred forty-five".