690734436 has 192 divisors, whose sum is σ = 2091909120. Its totient is φ = 172782720.

The previous prime is 690734431. The next prime is 690734449. The reversal of 690734436 is 634437096.

It is a super-2 number, since 2×690734436² = 954228122152476192, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (690734431) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1137645 + ... + 1138251.

It is an arithmetic number, because the mean of its divisors is an integer number (10895360).

Almost surely, 2^690734436 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 690734436, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1045954560).

690734436 is an abundant number, since it is smaller than the sum of its proper divisors (1401174684).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

690734436 is a wasteful number, since it uses less digits than its factorization.

690734436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 694 (or 692 counting only the distinct ones).

The product of its (nonzero) digits is 326592, while the sum is 42.

The square root of 690734436 is about 26281.8271054354. The cubic root of 690734436 is about 883.9690020730.

The spelling of 690734436 in words is "six hundred ninety million, seven hundred thirty-four thousand, four hundred thirty-six".