396708690 has 64 divisors (see below), whose sum is σ = 1125653760. Its totient is φ = 87548160.

The previous prime is 396708679. The next prime is 396708701. The reversal of 396708690 is 96807693.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (396708679) and next prime (396708701).

It is a super-2 number, since 2×396708690² = 314755569443032200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 26481 + ... + 38660.

It is an arithmetic number, because the mean of its divisors is an integer number (17588340).

Almost surely, 2^396708690 is an apocalyptic number.

396708690 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

396708690 is an abundant number, since it is smaller than the sum of its proper divisors (728945070).

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

396708690 is a wasteful number, since it uses less digits than its factorization.

396708690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65187.

The product of its (nonzero) digits is 489888, while the sum is 48.

The square root of 396708690 is about 19917.5472887602. The cubic root of 396708690 is about 734.7798498422.

The spelling of 396708690 in words is "three hundred ninety-six million, seven hundred eight thousand, six hundred ninety".